CN105280037A - A full-touch-control primary school pinyin education intelligent audio-video integrated teaching apparatus - Google Patents
A full-touch-control primary school pinyin education intelligent audio-video integrated teaching apparatus Download PDFInfo
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- CN105280037A CN105280037A CN201510797170.1A CN201510797170A CN105280037A CN 105280037 A CN105280037 A CN 105280037A CN 201510797170 A CN201510797170 A CN 201510797170A CN 105280037 A CN105280037 A CN 105280037A
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- connecting branch
- phonetic
- display
- display device
- hackle mark
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
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- Educational Administration (AREA)
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electrically Operated Instructional Devices (AREA)
Abstract
The invention provides a full-touch-control primary school pinyin education intelligent audio-video integrated teaching apparatus and belongs to pinyin teaching aids in the technical field of teaching aids. The apparatus comprises a pedestal, a support frame and a cross rod. A display device is connected to the cross rod. A display panel of the display device is provided with a button selection area and a video display area. The display device comprises a microprocessor, a button triggering module, a display card, a hard disk memorizer, a loudspeaker and a pinyin video display module, wherein the button triggering module, the display card and the hard disk memorizer are electrically connected with the microprocessor; the loudspeaker and the pinyin video display module are electrically connected with the display card. One side of the display device is connected with the teaching board. The pinyin teaching apparatus is suitable for teaching.
Description
Technical field
The invention belongs to teaching aid technical field, relate to the phonetic teaching aid used in a kind of primary school teaching.
Background technology
Primary school is the school that people accept initial period regular education, is the important component part of basic education.General 6-12 year is primary school school-age children, and the time limit of present stage primary school period education is 6 years, and some area is still 5 years.It is the secondary school education stage after the primary school education stage.
In existing primary school teaching process, be generally given lectures on dais by teacher, and writing on the blackboard on blackboard, complete corresponding teaching task.
Summary of the invention
In existing primary school teaching process, owing to adopting, conventional teacher gives lectures, the mode of blackboard writing is carried out, and thus routinely can not be attracted to the notice of student in teaching process, make student easily absent-minded, affect quality of instruction.
Goal of the invention of the present invention is: for prior art Problems existing, the full touch-control primary school phonetic education Intelligent video integral type teaching equipment providing a kind of quality of instruction high, this full touch-control primary school phonetic education Intelligent video integral type teaching equipment can by the notice providing video/audio function to attract student, and the height adjustable of the display device of this instructional device, be convenient to teacher and move or carry this apparatus for demonstrating.
To achieve these goals, the technical solution used in the present invention is:
A kind of primary school phonetic education Intelligent video one instructional device, comprise base, the bracing frame be arranged on base, be positioned at the cross bar be connected above base and with bracing frame, described cross bar is connected with display device, the display panel of described display device is provided with button selection area and image display district; Described display device also comprises microprocessor, button trigger module, display card, harddisk memory, loudspeaker and phonetic image display module, described button trigger module, display card and harddisk memory are electrically connected with microprocessor respectively, and described loudspeaker, phonetic image display module are all electrically connected with display card; Support frame as described above is folding support stand, and described base is also hinged with support bar, and the free end of described support bar is connected in the buckling groove of bottom connecting branch of bracing frame; Described cross bar is connected with display device, the side of described display device is also connected with board of education, described board of education comprises plate body and demonstration board, the front of described plate body is fixedly connected with the horizontal mounting plate that some short transverses along plate body are arranged, the upper edge, front of described horizontal mounting plate is fixed with thread gluing, and described demonstration board is arranged on horizontal mounting plate by thread gluing.
Wherein, described folding support stand comprises connecting branch assembly and hinge assembly, described connecting branch assembly comprises top connecting branch and bottom connecting branch, described hinge assembly comprises upper sleeve, lower parts casing pipe, regulating spring and degree of tightness adjusting knob, connecting branch one end, described top is connected with cross bar, the other end of described top connecting branch is inserted in upper sleeve, the inner face of described upper sleeve lower end is provided with the first spline hackle mark, the inner face of described bottom sleeve upper end is provided with the second spline hackle mark, described second spline hackle mark engages with the first spline hackle mark, connecting branch one end, described bottom is inserted in lower parts casing pipe, the other end and the base of described bottom connecting branch are hinged, the screw rod of described degree of tightness adjusting knob the inner is successively through regulating spring, the through hole of upper sleeve lower end is also threadedly connected in the screw of bottom sleeve upper end.
Wherein, the face of cylinder of described bottom connecting branch offers some buckling grooves, some buckling grooves along bottom connecting branch length direction successively uniformly at intervals, and the free end of described support bar can be connected in any one buckling groove of bottom connecting branch.
Wherein, described bottom connecting branch is hinged with upper support bar, the face of cylinder of described top connecting branch offers some buckling grooves, the free end of described upper support bar is connected in one of them buckling groove of top connecting branch.
Wherein, described first spline hackle mark is centered by the through hole of upper sleeve lower end and the hackle mark launched radially, and described second spline hackle mark is the hackle mark launched radially centered by the screw of following parts casing pipe upper end.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
In the present invention, the display panel of the display device of full touch-control primary school phonetic education Intelligent video integral type teaching equipment divides and has button selection area and image display district, some icons are distributed with in the region of this button selection area, the corresponding phonetic image of each icon, image display district is used for the phonetic image corresponding to display button selection area, display device also comprises microprocessor, button trigger module, display card, harddisk memory, loudspeaker and phonetic image display module, when after the some icons of click, button trigger module is triggered and produces trigger pip and be delivered to microprocessor, this microprocessor reads corresponding phonetic image data according to trigger pip in harddisk memory, by display card, video information is shown in image display district by phonetic image display module, audio-frequency information is exported by loudspeaker, the combination of image display district and loudspeaker makes phonetic image information show sound shadow and luxuriant, effectively can attract the notice of student, improve quality of instruction and the teaching efficiency of teacher, promote the learning interest of student.The bracing frame of full touch-control primary school phonetic education Intelligent video integral type teaching equipment adopts folding support stand, folding support stand by organizing connecting branch assembly and hinge assembly is hinged forms more, wherein in the connecting branch assembly upper sleeve that is plugged in hinge assembly or lower parts casing pipe, upper sleeve is by the first spline hackle mark on the inner face of upper sleeve lower end, the second spline hackle mark on the inner face of bottom sleeve upper end and lower parts casing pipe, thus connecting branch assembly can with upper sleeve, lower parts casing pipe is together around the bolt rotary of degree of tightness adjusting knob the inner, thus realize the height adjustable of the display device in apparatus for demonstrating, and be placed on the base of apparatus for demonstrating by the display device in apparatus for demonstrating is folded by folding support stand, be convenient to teacher and move or carry this apparatus for demonstrating.Base is hinged with support bar, and the free end of support bar is connected in one of them buckling groove of bottom connecting branch, base, support bar and bottom connecting branch composition triangular structure, thus effectively improves the stability of bracing frame.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of display device of the present invention;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the structural representation of board of education in the present invention;
Fig. 4 is the partial schematic diagram of bracing frame in the present invention;
Fig. 5 is the structural representation of display device and map teaching aid in the present invention;
Fig. 6 is the structural representation of map teaching aid in the present invention;
Fig. 7 is the structural representation of drawer in the present invention;
Wherein, Reference numeral is: 1-cross bar, 2-display device, 3-button selection area, 4-image display district, 5-bracing frame, 8-base, 11-map teaching aid, 12-drawer, 13-board of education, 14-support bar, 111-substrate, 112-LED display, 113-glass sandwich, 114-electric wire, 115-plug, 121-support body, 122-card rest area, 131-plate body, 132-horizontal mounting plate, 133-magnet, 134-demonstration board, 51-upper sleeve, 52-lower parts casing pipe, 53-degree of tightness adjusting knob, 54-regulating spring, 55-lock sleeve, 56-buckling groove, 57-top connecting branch, 58-bottom connecting branch, 59-upper support bar, 511-the first connecting portion, 512-screw thread pipeline section, 521-the second connecting portion, 530-knob portion, 531-screw rod, 5110-the first spline hackle mark, 5210-the second spline hackle mark, 5211-screw.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
embodiment 1
A kind of full touch-control primary school phonetic education Intelligent video integral type teaching equipment, this full touch-control primary school phonetic education Intelligent video integral type teaching equipment comprises base 8, bracing frame 5 and cross bar 1, wherein bracing frame 5 is fixedly mounted on the end face of base 8, cross bar 1 to be positioned at above base 8 and to be fixedly connected on bracing frame 5, and base 8, bracing frame 5, cross bar 1 form " work " character form structure.
Cross bar 1 is also connected with display device 2, and the display panel of display device 2 divides button selection area 3 and image display district 4, is provided with some icons in the region of this button selection area 3.Microprocessor, button trigger module, display card, harddisk memory, loudspeaker and phonetic image display module is also provided with in display device 2, wherein button trigger module, display card, harddisk memory are all electrically connected with microprocessor, and microprocessor is electrically connected with loudspeaker, phonetic image display module respectively.Some icons are distributed with in the region of button selection area 3, the corresponding phonetic image of each icon, image display district 4 is for the phonetic image corresponding to display button selection area 3, display device 2 also comprises microprocessor, button trigger module, display card, harddisk memory, loudspeaker and phonetic image display module, when after the some icons of click, button trigger module is triggered and produces trigger pip and be delivered to microprocessor, this microprocessor reads corresponding phonetic image data according to trigger pip in harddisk memory, by display card, video information is shown in image display district 4 by phonetic image display module, audio-frequency information is exported by loudspeaker.In addition, microprocessor can also arrange USB, a large amount of phonetic image informations is inputed to microprocessor by USB by outside USB flash disk or other electronics movable storage devices.
The display panel of the display device 2 of primary school's phonetic education Intelligent video one instructional device divides and has button selection area 3 and image display district 4, some icons are distributed with in the region of this button selection area 3, the corresponding phonetic image of each icon, image display district 4 is for the phonetic image corresponding to display button selection area 3, display device 2 also comprises microprocessor, button trigger module, display card, harddisk memory, loudspeaker and phonetic image display module, when after the some icons of click, button trigger module is triggered and produces trigger pip and be delivered to microprocessor, this microprocessor reads corresponding phonetic image data according to trigger pip in harddisk memory, by display card, video information is shown in image display district 4 by phonetic image display module, audio-frequency information is exported by loudspeaker, image display district 4 and the combination of loudspeaker make phonetic image information show sound shadow and luxuriant, effectively can attract the notice of student, improve quality of instruction and the teaching efficiency of teacher, promote the learning interest of student.
This bracing frame 5 is folding support stand, wherein base 8 is hinged with support bar 14, this support bar 14 one end and base 8 hinged, this support bar 14 other end is free end, and the free end of support bar 14 can be connected in the buckling groove 56 of the bottom connecting branch 58 of bracing frame 5.
The left side of this display device 2 or right side are also connected with board of education 13.This board of education 13 can artificially be changed in phonetic teaching process, facilitates student to carry out oneself's examination and teacher's enquirement.This board of education 13 comprises plate body 131 and demonstration board 134, and wherein plate body 131 is directly fixedly connected with display device 2, the front of this plate body 131 is evenly equipped with some horizontal mounting plate 132, wherein horizontal mounting plate 132 and demonstration board 134 one_to_one corresponding.This horizontal mounting plate 132 is arranged along the short transverse uniform intervals of plate body 131.The upper edge in the front of each block horizontal mounting plate 132 is all fixed with thread gluing 133, and demonstration board 134 is fixedly mounted on horizontal mounting plate 132 by the thread gluing 133 on corresponding horizontal mounting plate 132.
embodiment 2
On the basis of embodiment one, bracing frame 5 is folding support stand, this folding support stand comprises connecting branch assembly and hinge assembly, connecting branch assembly comprises top connecting branch 57 and bottom connecting branch 58, and hinge assembly comprises upper sleeve 51, lower parts casing pipe 52, regulating spring 54 and degree of tightness adjusting knob 53.Wherein, the two ends of this folding support stand are articulated and connected with base 8, cross bar 1 respectively, and still adopt hinge assembly to connect when folding support stand is connected with cross bar 1 with base 8, folding support stand.This folding support stand with " top connecting branch 57-hinge assembly-bottom connecting branch 58-hinge assembly-top connecting branch 57-...-hinge assembly-bottom connecting branch 58 " connected mode connect.Be sleeve body in the middle part of upper sleeve 51, upper sleeve 51 lower end is provided with the first connecting portion 511 that cross section is rounded, axial and sleeve body is axially perpendicular.First connecting portion 511 center is provided with axially through through hole, and it is the hackle marks launched centered by through hole, radially that the inner of the first connecting portion 511 is provided with the first spline hackle mark 5110, first spline hackle mark 5110.Upper sleeve 51 upper end is provided with the screw thread pipeline section 512 docked with sleeve body.Screw thread pipeline section 512 lateral wall is provided with external thread, inside screw thread pipeline section 512, bore mates with top connecting branch 57 external diameter, screw thread pipeline section 512 outer end oral area is provided with multiple fluting, and above-mentioned top connecting branch 57 is through screw thread pipeline section 512 and in the rotatable sleeve body being inserted into upper sleeve 51.Lock sleeve 55 madial wall is provided with internal thread, lock sleeve 55 inner end is enclosed within screw thread pipeline section 512, the thread size of lock sleeve 55 inner end mates with the thread size outside screw thread pipeline section 512, and the thread size inside outer end is slightly less than the thread size outside screw thread pipeline section 512.Therefore, tighten lock sleeve 55, lock sleeve 55 enters screw thread to screw thread pipeline section 512 the inner, then can extrude the screw thread pipeline section 512 outer end oral area with multiple fluting, make screw thread pipeline section 512 outer end oral area be locked cover 55 extruding reduce, do not reduced by screw thread pipeline section 512 external port and block top connecting branch 57 outer wall, thus locking top connecting branch 57; Otherwise, unscrew lock sleeve 55, i.e. rotatable top connecting branch 57.Bottom connecting branch 58 is fixed in lower parts casing pipe 52 lower end, lower parts casing pipe 52 upper end is provided with the second connecting portion 521 that cross section is rounded, axial and sleeve body is axially perpendicular, second connecting portion 521 is provided with the screw 5211 corresponding with through hole, second connecting portion 521 the inner be provided with the second spline hackle mark 5210, the second spline hackle mark 5210 be meshed with the first spline hackle mark 5110 be centered by screw 5211, the hackle mark that launches radially.When through hole is corresponding with axis hole, the first spline hackle mark 5110 and the second spline hackle mark 5210 just can engage completely.Degree of tightness adjusting knob 53 outer end is knob portion 530, the inner is screw rod 531.The screw rod 531 of degree of tightness adjusting knob 53 the inner is connected in the screw 5211 of lower parts casing pipe 52 through through hole whorl, between the outer face that regulating spring 54 is pressed in the first connecting portion 511 by elasticity and knob portion 530, the effect of regulating spring 54 is outer elastic inside pressing first connecting portion 511 from the first connecting portion 511 and the second connecting portion 521, makes there is interactional pressure between the first spline hackle mark 5110, second spline hackle mark 5210.
When needing stretching or contractile folding bracing frame, operator rotates knob portion 530, by changing the distance between knob portion 530 inner face and the outer face of the first connecting portion 511, the length of adjustment regulating spring 54, thus change the elastic pressure of regulating spring 54, make the pressure between the first spline hackle mark 5110 and the second spline hackle mark 5210 to suitable degree, so both need operator to bestow certain strength and regulate the angle between top connecting branch 57 and bottom connecting branch 58 be fixed on foldable structure, bring convenience to adjustment, allow again the foldable structure after adjusting under regulating spring 54 and the effect of spline hackle mark, there is certain load-bearing, spline strength, thus keep the angle stabilization between top connecting branch 57 and bottom connecting branch 58 constant, result of use is very good.In addition, operator unscrews lock sleeve 55, i.e. rotatable top connecting branch 57, then tightens and can fix top connecting branch 57 and make it can not rotate in circumference.
This folding support stand can be formed by connecting by one group of connecting branch assembly and hinge assembly, also can by organize more connecting branch assembly and hinge assembly successively alternately laminated setting be formed by connecting.In the present embodiment, folding support stand is formed by connecting by one group of connecting branch assembly and hinge assembly, namely connected with the connected mode of " top connecting branch 57-hinge assembly-bottom connecting branch 58 " by bracing frame, its middle and upper part connecting branch 57 is directly connected with cross bar 1, and bottom connecting branch 58 is connected with base 8.
embodiment 3
On the basis of embodiment two, folding support stand by organizing connecting branch assembly and hinge assembly is formed by connecting more, namely by bracing frame with " top connecting branch 57-hinge assembly-bottom connecting branch 58-hinge assembly-top connecting branch 57-...-hinge assembly-bottom connecting branch 58 " connected mode connect.Bottom connecting branch 58 is hinged with upper support bar 59, the face of cylinder of top connecting branch 57 offers some buckling grooves 56, the free end of upper support bar 59 is connected in one of them buckling groove 56 of top connecting branch 57.In addition, top connecting branch 57 is hinged with upper support bar 59, the face of cylinder of the bottom connecting branch 58 above next-door neighbour top connecting branch 57 offers some buckling grooves 56, and the free end of upper support bar 59 is connected in one of them buckling groove 56 of top connecting branch 57.Therefore, top connecting branch 57 and bottom connecting branch 58 are supported by upper support bar 59 each other, effectively can improve the stability of bracing frame.
embodiment 4
On the basis of embodiment two or embodiment three, the face of cylinder of bottom connecting branch 58 offers some buckling grooves 56, the length direction of some buckling groove 56 salt bottoms connecting branch 58 successively uniformly at intervals.This buckling groove 56 can be circular arc buckling groove 56, can be also circular arc buckling groove 56, and in the present embodiment, this buckling groove 56 can be circular arc buckling groove 56.Base 8 is also hinged with support bar 14, this support bar 14 one end is hinged on base 8, this support bar 14 other end is free end, and the size of the size of the free end of this support bar 14, size and buckling groove 56, size are suitable, the free end of support bar 14 is connected in one of them buckling groove 56 on bottom connecting branch 58, make base 8, support bar 14 and bottom connecting branch 58 form triangular structure, improve the stability of bracing frame.
embodiment 5
On the basis of above-described embodiment, the sidewall of this display device 2 offers standing groove, map teaching aid 11 is placed with in standing groove, student can be made to observe directly the map situation of different period of history by map teaching aid 11, improve enthusiasm and the interest of Students ' Learning, improve teaching level and the teaching efficiency of teacher.
embodiment 6
On the basis of embodiment five, map teaching aid 11 comprises substrate 111, and this substrate is divided into three-decker, and wherein bottom structure is LED display 112, and the front of LED display 112 is provided with twice glass sandwich 113.When using this map teaching aid 11, display base map of China in LED display 112, be inserted with the history made in advance map in each period in glass sandwich 113, the history made in advance map in each period is corresponding with the basic map profile that LED display 112 shows.Each luminescence unit back side of LED display 112 has connection and color controlling switch, can show the different colours of each lamp as required, and by the compositing area such as LED of different colours.
In addition, this LED display 112 is also provided with electric wire 114 and plug 115.
embodiment 7
On the basis of above-described embodiment, this base 8 is also provided with drawer 12, this drawer 12 is arranged on the leading flank of base 8.This drawer comprises support body 121, and support body 121 inside divides some card rest areas 122, and this card rest area 122 can be used for placing Pinyin card.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a Zhong Quan touch-control primary school phonetic education Intelligent video integral type teaching equipment, comprise base (8), the bracing frame (5) be arranged on base (8), be positioned at base (8) top and the cross bar (1) be connected with bracing frame (5), it is characterized in that: described cross bar (1) is connected with display device (2), the display panel of described display device (2) is provided with button selection area (3) and image display district (4); Described display device (2) also comprises microprocessor, button trigger module, display card, harddisk memory, loudspeaker and phonetic image display module, described button trigger module, display card and harddisk memory are electrically connected with microprocessor respectively, and described loudspeaker, phonetic image display module are all electrically connected with display card; Support frame as described above (5) is folding support stand (5), described base (8) is also hinged with support bar (14), and the free end of described support bar (14) is connected in the buckling groove (56) of the bottom connecting branch (58) of bracing frame (5); The side of described display device (2) is also connected with board of education (13), described board of education (13) comprises plate body (131) and demonstration board (134), the front of described plate body (131) is fixedly connected with the horizontal mounting plate (132) that some short transverses along plate body (131) are arranged, the upper edge, front of described horizontal mounting plate (132) is fixed with thread gluing (133), and described demonstration board (134) is arranged on horizontal mounting plate (132) by thread gluing (133).
2. a kind of full touch-control primary school as claimed in claim 1 phonetic education Intelligent video integral type teaching equipment, it is characterized in that: described folding support stand (5) comprises connecting branch assembly and hinge assembly, described connecting branch assembly comprises top connecting branch (57) and bottom connecting branch (58), described hinge assembly comprises upper sleeve (51), lower parts casing pipe (52), regulating spring (54) and degree of tightness adjusting knob (53), connecting branch (57) one end, described top is connected with cross bar (1), the other end on described top connecting branch (57) is inserted in upper sleeve (51), the inner face of described upper sleeve (51) lower end is provided with the first spline hackle mark (5110), the inner face of described lower parts casing pipe (52) upper end is provided with the second spline hackle mark (5210), described second spline hackle mark (5210) engages with the first spline hackle mark (5110), connecting branch (58) one end, described bottom is inserted in lower parts casing pipe (52), the other end and the base (8) of described bottom connecting branch (58) are hinged, the screw rod that described degree of tightness adjusting knob (53) is inner passes regulating spring (54) successively, the through hole of upper sleeve (51) lower end is also threadedly connected in the screw (5211) of lower parts casing pipe (52) upper end.
3. a kind of full touch-control primary school as claimed in claim 2 phonetic education Intelligent video integral type teaching equipment, it is characterized in that: the face of cylinder of described bottom connecting branch (58) offers some buckling grooves (56), some buckling grooves (56) along bottom connecting branch (58) length direction successively uniformly at intervals, and the free end of described support bar (14) can be connected in any one buckling groove (56) of bottom connecting branch (58).
4. a kind of full touch-control primary school phonetic educates Intelligent video integral type teaching equipment as claimed in claim 2 or claim 3, it is characterized in that: described bottom connecting branch (58) is hinged with upper support bar (59), the face of cylinder on described top connecting branch (57) offers some buckling grooves (56), the free end of described upper support bar (59) is connected in one of them buckling groove (56) of top connecting branch (57).
5. a kind of full touch-control primary school phonetic educates Intelligent video integral type teaching equipment as claimed in claim 2 or claim 3, it is characterized in that: described first spline hackle mark (5110) is centered by the through hole of upper sleeve (51) lower end and the hackle mark launched radially, and described second spline hackle mark (5210) is the hackle mark launched radially centered by the screw of following parts casing pipe (52) upper end.
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CN201510797170.1A CN105280037A (en) | 2015-11-18 | 2015-11-18 | A full-touch-control primary school pinyin education intelligent audio-video integrated teaching apparatus |
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CN201510797170.1A CN105280037A (en) | 2015-11-18 | 2015-11-18 | A full-touch-control primary school pinyin education intelligent audio-video integrated teaching apparatus |
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CN204143687U (en) * | 2014-09-28 | 2015-02-04 | 方蕊 | English teaching lifting display device |
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WO1997027789A1 (en) * | 1996-02-01 | 1997-08-07 | Metauplast | Width-adjustable display tray |
CN201861095U (en) * | 2010-05-25 | 2011-06-15 | 武辉 | Collapsible lift type multi-angle desktop reading rack |
CN203207629U (en) * | 2013-04-12 | 2013-09-25 | 周敏然 | Foldable material showing shelf |
CN203308844U (en) * | 2013-06-18 | 2013-11-27 | 李威 | Foldable structure on foldable bracket |
CN203366585U (en) * | 2013-07-30 | 2013-12-25 | 韩惠 | History teaching board |
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CN204102356U (en) * | 2014-10-16 | 2015-01-14 | 吴再锋 | Learn the dual-purpose historical teaching picture mosaic of religion |
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Application publication date: 20160127 |