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1054results about "Writing boards" patented technology

Glass handwriting board

The present invention discloses a glass handwriting board, comprising a shooting fill light bar assembly, a handwriting glass assembly, a control box assembly and a shooting rod assembly, wherein the shooting fill light bar assembly is arranged on the front edge of the handwriting glass assembly, the control box assembly is arranged at the middle position of the bottom of the handwriting glass assembly, and the rear side of the control box assembly is connected to the shooting rod assembly. The present invention integrates the shooting rod assembly with the handwriting glass assembly through the control box assembly, so that the space occupied by the device is small; at the same time, by arranging the shooting rod assembly behind the handwriting glass assembly, the shooting rod assembly can shoot the writing content on the handwriting glass assembly, and the teacher in front of the handwriting glass assembly can also be photographed at the same time, which can strengthen the interaction between teachers and students, thereby effectively improving the teaching quality.
Owner:SHENZHEN KERUN VISUAL TECH CO LTD

Color magnetic particle preparation method, color magnetic particle, magnetic microcapsule and magnetic film

The invention discloses a colored magnetic particle preparation method, a colored magnetic particle, a magnetic microcapsule and a magnetic film, and relates to the technical field of magnetic particle preparation. According to the preparation method, ferric salt and an alkaline substance are adopted, a ferroferric oxide precursor precipitation solution is generated through a coprecipitation method, surface modification is conducted through oleic acid, the dispersity and stability of particles in an organic system are enhanced, a solvent is adopted for washing and drying, and the purity and chemical stability of the particles are further improved; subsequently, mixing the modified nano ferroferric oxide, a dye, a high polymer and a functional additive to obtain the colored magnetic particle. The method has the advantages that the preparation process is simple, and the prepared colored magnetic particles are excellent in dispersity, stability and functionality.
Owner:深圳市鑫盛智能科技有限公司

Magnetic microcapsule capable of preventing particle sedimentation, preparation method of magnetic microcapsule and magnetic film

The invention relates to the technical field of microcapsules, provides a magnetic microcapsule capable of preventing particle sedimentation, a preparation method of the magnetic microcapsule and a magnetic film, and aims to solve the problems of low writing smoothness and poor trace durability due to particle sedimentation and aggregation in the prior art. The magnetic microcapsule comprises a wall material and a core material, the wall material is a mixture comprising an anionic polymer and a cationic polymer, and the core material is a mixture comprising magnetic particles, non-magnetic particles, an oily solvent and a suspension stabilizer; the suspension stabilizer comprises any one or more of phthalic ester, polyamide wax, polysiloxane, sorbitan oleate, sorbitan monostearate, silicon dioxide, magnesium aluminum silicate and magnesium lithium silicate; according to the invention, magnetic particles and non-magnetic particles can be prevented from settling and gathering, and writing fluency and trace durability are ensured.
Owner:深圳市鑫盛智能科技有限公司

Drama film and television literature teaching display device

The invention discloses a drama movie and television literature teaching display device, and particularly relates to the technical field of teaching display, the drama movie and television literature teaching display device comprises a mounting seat, the front side of the mounting seat is provided with a groove, the front side of the mounting seat is provided with two moving grooves, and the front side of the mounting seat is provided with four mounting holes; and the rotating assembly comprises a motor fixedly connected to the front side of the mounting base, a first rotating shaft is fixedly connected to the front end of the motor, and two first bevel gears are fixedly connected to the outside of the first rotating shaft. Through cooperation of the rotating assembly and the vibration assembly, when the device is used, replacement display can be conducted through the first blackboard and the second blackboard, during replacement, the first blackboard and the second blackboard can be automatically cleaned, dust can be absorbed, and the device is convenient to use. And the situation that much dust flies in the air and is inhaled by the teaching personnel and the students, and the body health of the teaching personnel and the students is affected is avoided, and the practicability of the device is improved.
Owner:SHANXI UNIV

High-quality teaching system

The invention discloses a high-quality teaching system which comprises an integrated support which is hung on a ceiling, a control shaft is integrated on the integrated support, the bottom of the control shaft is connected with a projector shell, the high-quality teaching system further comprises a teaching blackboard, a follow-up display structure is arranged on the teaching blackboard, and the follow-up display structure is connected with the projector shell. A following adjusting structure is arranged between the control shaft and the integrated support. The invention relates to the technical field of teaching, according to the high-quality teaching system, through spatial reconstruction and intelligent collaborative design, the problem of spatial conflict between traditional multimedia equipment and a blackboard is thoroughly solved, the integrated support realizes projection and sound equipment aerial integrated layout, and the wall space is remarkably released; the movable blackboard system and the automatic tracking projection cooperatively operate, so that a projection picture is adaptive to a blackboard writing area in real time; the modular design greatly improves the equipment deployment efficiency, a teacher can realize seamless switching of'blackboards, namely screens' without manual adjustment, and a highly flexible and space-intensive teaching environment is constructed.
Owner:JILIN COMM POLYTECHNIC

Multifunctional graphic design auxiliary drawing device

The invention discloses a multifunctional graphic design auxiliary drawing device, and particularly relates to the technical field of auxiliary drawing devices. The drawing board frame is fixedly connected to the bottom frame; the painting plate is hinged to the upper end of the drawing board frame and is made of a transparent material; and the pigment scraping assembly is arranged on the painting plate. The painting plate is arranged, after the painting plate is turned to be parallel to the drawing board frame, painting can be conducted on the painting plate, the painting area is consistent with the outline of the design content on the drawing paper, in this way, painting design can be conducted on the premise that the painting paper is not contacted, in addition, repeated design can be achieved by wiping the pigment on the painting plate, and the painting efficiency is improved. Unnecessary waste is reduced, and in addition, operation and use are convenient and fast. When the sliding block horizontally moves, the long scraping plate is driven to horizontally move, and when the long scraping plate horizontally moves, pigment on the surface of the painting plate can be scraped off, so that the next painting design can be carried out, manual wiping is not needed, and the pigment is prevented from adhering to the hand.
Owner:RIZHAO VOCATIONAL & TECHNICAL UNIVERSITY

Writing device with erasable board

The utility model relates to a writing device with an erasable board, which comprises at least two panels, every two panels are integrally arranged and are made of the same PP (polypropylene) plastic or paper-plastic composite material or wood-plastic composite material or metal-plastic composite material; every two panels are oppositely folded through a folding ridge line, the thickness of the folding ridge line is smaller than that of each panel, the section of a folding ridge part formed between every two panels is an inverted trapezoidal groove or a U-shaped groove or a V-shaped groove, and folding is convenient. At least one erasable plane for writing is arranged on the panel; the device is simple in structure and processing technology and convenient to use; the folding structure is small in size and convenient to store and carry; the material is non-toxic, odorless, green and safe; writing is smooth, and erasing is traceless; different structures can be changed and combined to have the functions of a notebook computer, a note board, a table signboard, a writing base plate and the like, and under the clamping of the digital photographing recognition technology, the multifunctional notebook computer can be repeatedly used, and cost is saved.
Owner:LANZHOU ZHUZI ART DESIGN CO LTD

Intelligent teaching instrument for law education

The invention relates to the technical field of teaching equipment, in particular to an intelligent teaching instrument for law education, which comprises a shell, a connecting rod and the like, and the shell is fixedly connected with a connecting rod. According to the invention, a whiteboard film is pasted on the surface of the curtain, so that a teacher can directly write on the surface of the curtain by using a whiteboard pen without repeatedly switching between the curtain and a blackboard, and two first electric sliding blocks located on the same abutting plate move in opposite directions and drive a cross connecting rod to unfold, so that the operation is convenient, and the teaching efficiency is improved. The crossed connecting rods drive the abutting plates to be far away from each other, so that the folding plates are gradually pulled and straightened through the abutting plates, the abutting plates and the folding plates are matched to form a whole back plate, and when writing is conducted on the surface of the curtain, the abutting plates and the folding plates can serve as supports, so that sinking deformation of the curtain is avoided; therefore, normal writing operation can be carried out on the curtain.
Owner:CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY

Folding turnover type modularized multimedia teaching blackboard and light environment system

A folding turnover type modularized multimedia teaching blackboard and light environment system comprises a main body, a control module, blackboard modules and a multimedia display module are arranged on the main body, the multimedia display module is rotationally arranged on the main body, and the blackboard modules are rotationally arranged on the two sides of the multimedia display module. According to the technical scheme, the problem that in the switching process of an existing push-pull type multimedia teaching blackboard, visible blind areas of students are caused is effectively solved, it is ensured that the students at all positions in a classroom can obtain continuous and unshielded visual fields, and reading difficulty caused by the limited visual angles is avoided; meanwhile, due to the turnover layout of the blackboard module, occupation of a writing area is avoided, the space utilization rate of a display area and a writing area is remarkably increased, seamless connection of function switching is achieved, and therefore the overall applicability of the teaching environment is optimized.
Owner:林诚俊

Modular intelligent teaching platform

The invention belongs to the technical field of intelligent teaching, and particularly relates to a modular intelligent teaching platform which comprises a frame and first rails, the two first rails are arranged in the frame in the transverse direction at intervals, and a plurality of partition plates are arranged on one sides of the two first rails in the frame in the vertical direction. The first rail and the partition plates are arranged in the frame to form a plurality of partition bins, a containing box is installed in each partition bin in a sliding mode, a signal collecting end is arranged on the end face, close to the interior of the frame, of each containing box, a buffer support assembly used for fixing communication equipment is arranged in each containing box, and a fresh air system is arranged in the frame. Through the structural design of the frame, the placement box, the signal acquisition end, the buffer bracket assembly, the fresh air system and the like, various multimedia communication devices can be divided into various modules to be uniformly mounted and arranged, so that the multimedia communication devices and corresponding models of wires can be uniformly arranged and are convenient to disassemble and maintain.
Owner:ZHEJIANG SHANNUO INTELLIGENT TECH CO LTD

Adsorption type blackboard eraser box and blackboard with same

The invention relates to an adsorption type blackboard eraser box which comprises a rectangular box body with at least one sealed cavity, a dust receiving plate is arranged on the bottom face of the rectangular box body, a partition plate is arranged in the sealed cavity, a rubber plug plate is arranged on the bottom face of the partition plate, a shaft rod is movably connected to the top face of the rectangular box body, and a connecting arm is arranged on the top face of the shaft rod. The lower end of the shaft rod penetrates through the partition plate and is fixed to the rubber plug plate. Compared with a traditional blackboard eraser, the blackboard eraser is designed to be of a rectangular box body structure, the dust collection plate is arranged in the blackboard eraser, the dust collection plate can be opened through drawing of the shaft rod and the one-way valve arranged on the bottom face of the rectangular box body, and dust on a blackboard is adsorbed through a seam formed between the dust collection plate and the rectangular box body; according to the scheme, a blackboard with the blackboard eraser box is further designed, a traction mechanism, a main shaft and a compression spring lifting mechanism are arranged on the blackboard, the lifting mechanism is arranged on the left side of the blackboard and drives the adsorption type blackboard eraser box to move up and down under the cooperation of the compression spring lifting mechanism, and the overall structure is ingenious.
Owner:GUILIN UNIV OF AEROSPACE TECH

Writing auxiliary device for Parkinson's patient

The invention relates to a Parkinson patient writing auxiliary device which comprises a base, and a first protective shell is arranged at the top end of the base. The adjusting mechanism is provided with two power output ends, and the adjusting mechanism is arranged in the first protective shell; the two supporting mechanisms are arranged on the base and are in transmission connection with the two power output ends of the adjusting mechanism correspondingly, and the adjusting mechanism is used for adjusting the heights of the two supporting mechanisms; the fixing plate is hinged to the top ends of the two supporting mechanisms, and a writing board is arranged at the top end of the fixing plate; the forearm fixing mechanism is arranged on one side wall of the fixing plate, and the forearm fixing mechanism is used for fixing the right forearm of the patient. The adjusting mechanism can adjust the heights of the two supporting mechanisms at the same time, the fixing plate and the writing plate are adjusted to the height matched with the height of a patient, the comfort degree of the patient during use is improved, the two supporting mechanisms can be adjusted to different heights, and the fixing plate and the writing plate incline towards the patient by a certain angle; and the comfort degree of the patient during use is further improved.
Owner:SECOND MEDICAL CENT OF CHINESE PLA GENERAL HOSPITAL

Writing whiteboard

The utility model provides a writing whiteboard, relates to the technical field of whiteboards, and is used for solving the technical problems that the writing whiteboard is large in occupied area and inconvenient to store, package and transport. The two white boards are rectangular boards, and the two bottom faces of the two white boards are each provided with a hinge assembly in the first direction. The two white boards are rotationally connected through a hinge assembly and form a hinge point, and the hinge point is located on the outer side of the side face of the writing white board. The two white boards can be turned over relatively, so that the writing white board is in an unfolded state or a folded state; when the writing whiteboard is in the unfolded state, the two whiteboards are located on the same plane, the splicing faces of the two whiteboards are attached in the second direction, and when the writing whiteboard is in the folded state, the two whiteboards are at least partially overlapped. The writing whiteboard provided by the utility model is used for carrying out blackboard writing in scenes such as teaching and conferences so as to facilitate communication and communication.
Owner:FOSHAN SHUNDE WENYANG STATIONERY MFG CO LTD

Marker pixel wicking apparatus

The present disclosure is directed to a marker pixel wicking apparatus that allows a user to create dimensional pixelated art using a method of applying a colored ink marker directly onto the top white surface of a specifically designed substrate. The substrate has been molded specifically with an array of small vertical flat-topped cylinders covering nearly the entire surface.
Owner:CRAYOLA LLC

Water-colored body, Water-colored body set

To provide an aqueous discoloration body and an aqueous discoloration set capable of extending a maintenance time of an aqueous discoloration image and capable of recognizing whether the aqueous discoloration image is formed with balance by covering with a cover member immediately after forming the aqueous-discolored image by adhering water.SOLUTION: An aqueous discoloration body set comprising an aqueous discoloration sheet 2 having a porous layer in which a low refractive index pigment is fixed in a dispersed state in a binder resin on an upper layer of a colored layer, and a transparent cover member 6 that covers an aqueous discolored image formed by adhesion of water on a surface of the porous layer, suppresses drying of water and delays disappearance of the aqueous discolored image, wherein the transparent cover member is provided with an aqueous discolored body 1 formed by providing a character frame 9 for characters formed on an aqueous discolored sheet and an aqueous adhesion tool forming the aqueous discolored image.SELECTED DRAWING: Figure 1
Owner:PILOT PEN CO LTD +1

Composition for forming surface layer, surface layer formed from said composition, surface material for writing on oil-based ink, and article including said surface material

ActiveJP7621616B2Writing boardsCoatings
To provide a surface layer formation composition that makes it possible to easily erase handwritten traces of oil-based ink, and erase the handwritten traces on the surface layer.SOLUTION: The surface layer formation composition in the present invention contains at least a polyfunctional acrylate capable of forming a crosslink structure upon irradiation with ultraviolet ray, and a photopolymerization initiator. An example of the composition is a surface layer formation composition in which the polyfunctional acrylate is one or more polyfunctional acrylate selected from polyfunctional acrylate having a pentaerythritol skeleton and polyfunctional acrylate having a urethane bond, and the photopolymerization initiator is 1-hydroxycyclohexylphenyl ketone.SELECTED DRAWING: Figure 1
Owner:KOBAYASHI & CO LTD +1

A multifunctional whiteboard

The utility model relates to the technical field of whiteboards, and in particular to a multifunctional whiteboard, comprising a whiteboard body, wherein a side of the whiteboard body having a writing function is defined as a front side, and the other side corresponding thereto is defined as a rear side. U-shaped brackets are provided on both sides of the whiteboard body so as to be rotatable 360° through a first rotating device, and a book support board for placing books and a page fixing structure for fixing book pages are fixedly provided on the rear side of the whiteboard body. The utility model whiteboard not only has a note-taking function, but can also be used as a reading stand for books, thus realizing multifunctional integration.
Owner:SHISHI CITY FUNI STATIONERY CO LTD

Whiteboard installation

The present invention provides a whiteboard device. The whiteboard device comprises a whiteboard, a dimming module, a display, a second writing structure, and a control module, wherein the display is located in a groove of the whiteboard; a first writing structure is arranged on one side of the whiteboard, and the first writing structure and the second writing structure are used to provide whiteboard pens for writing; the second writing structure is arranged in front of the display, and when the control module controls the display to start, the dimming module is simultaneously controlled to be transparent, and a user can view the display through the second writing structure and the dimming module; when the control module controls the display to turn off, the dimming module is simultaneously controlled to be opaque, and at this time, the user can write on the second writing structure, and the user can clearly see the handwriting written on the second writing structure.
Owner:SHENZHEN VIEWON CO LTD +1

Display board

The utility model relates to the technical field of teaching display boards, in particular to a display board which comprises a left bottom board and a right bottom board, supporting sliding shells are fixedly connected to the outer sides of the tops of the left bottom board and the right bottom board respectively, and a lifting screw rod and a guide sliding rod are arranged in inner cavities of the left supporting sliding shell and the right supporting sliding shell respectively. A driving motor is fixedly connected to an inner cavity of the bottom of the supporting sliding shell on the left side, movable sliding blocks movably sleeve the surfaces of a lifting screw rod and a guide sliding rod, display shells are fixedly connected to the inner sides of the left movable sliding block and the right movable sliding block through bolts, and inserting mechanisms are fixedly connected to the bottoms of the display shells on the front side and the left side of a left bottom plate. The pull rods at the bottom of the left display shell and the front side of the left bottom plate are pulled to drive the positioning insertion plate to move out of the insertion shell, the right display shell is pushed backwards, and the right display shell is folded to the rear side of the left display shell, so that the display plate can be folded to change the size, meanwhile, the storage space is saved, and transfer is more convenient.
Owner:BATOU LIGHT IND VOCATIONAL TECHN COLLEGE

Classroom electronic whiteboard all-in-one machine

The utility model relates to the technical field of electronic whiteboards, in particular to a classroom electronic whiteboard all-in-one machine which comprises a rectangular frame, fixed blackboards fixedly installed on the two sides in the rectangular frame, a first sliding blackboard, a second sliding blackboard and an electronic whiteboard fixed to the middle of the rectangular frame. Two symmetrical sliding groove sets are formed in each of the top and the bottom of the rectangular frame, each sliding groove set comprises two transversely-arranged sliding grooves, guide grooves are formed in the ends of the sliding grooves, chamfers are formed in the opposite sides of the two fixed blackboards, and first sliding columns are fixedly connected to the two sides of the top and the two sides of the bottom of the first sliding blackboard. The sliding blackboard has the advantages that when the sliding blackboards are moved, the fixed blackboards cannot affect movement of the sliding blackboards, so that the two sliding blackboards can be smoothly opened in a sliding mode, when the sliding blackboards horizontally move front and back, the first belt can still achieve the purpose of transmission, and the sliding blackboards can smoothly and synchronously slide to be opened or closed.
Owner:HENAN MUCHI INFORMATION TECHNOLOGY CO LTD

Mobile control panel

To provide a more useful mobile control panel than conventional ones.SOLUTION: Mobile control panels 1, 2, 3 each include a main body frame 10 having a main body accommodating area 10a and a main body opening 10b located above the main body accommodating area 10a, a leg 20 attached to the main body frame 10, wheels 30 rotatably attached to the leg 20, outer control panels 40, 140, 240 having a movable portion and attached to the main body frame 10 so as to open and close the main body opening 10b, and an inner control panel 50 accommodated in the main body accommodating area 10a and visible from the main body opening 10b when the outer control panels 40, 140, 240 open the main body opening 10b.SELECTED DRAWING: Figure 3
Owner:HEIWA KIKAI

Integrated electronic whiteboard system

PendingJP2026040293AWriting boardsProjectors
The objective of this project is to provide a comprehensive electronic whiteboard system that allows various uses by assembling various devices necessary for realizing the GIGA School Initiative at a relatively low cost while leaving the existing whiteboard as it is. [Solution] A first upper hanger rail 5 is placed along the upper edge of an existing blackboard 1, a first lower hanger rail 6 is placed along its lower edge, a second upper hanger rail 7 is placed along the upper side of the first upper hanger rail 5, and a second lower hanger rail 8 is placed along the lower side of the first lower hanger rail 6, a first sliding frame 11 for attaching an electronic blackboard 15 is hung between the first upper hanger rail 5 and the first lower hanger rail 6, and a second sliding frame 12 for attaching a projection-compatible board 16 and a projector 17 is hung between the second upper hanger rail 7 and the second lower hanger rail 8.
Owner:JAPAN FUTURE BLACKBOARD RES INST

Hydropower station water turbine guide vane opening simulation simulation device

This utility model belongs to the field of water turbine technology, specifically a simulation device for the guide vane opening of a hydropower station turbine. It includes a main model and a protective device. A secondary model is fixedly connected to the inner surface of the main model. The protective device is located on the surface of the main model and includes a placement plate that fits over the surface of the main model. Two rotating plates are rotatably connected to the surface of the placement plate. A fixing block is fixedly connected to the upper surface of the placement plate, and a limit block is rotatably connected to the surface of the fixing block. A writing device is provided on the side wall of the placement plate. The writing device includes two fixing plates whose side walls are fixedly connected to the side wall of the placement plate. A moving block is slidably connected to the inner wall of the fixing plates, and a writing plate is fixedly connected to one end of the two moving blocks that are close to each other. By setting up the entire device, the main model can be supported and protected, reducing the possibility of damage to the main and secondary models. It also facilitates explanation and enhances the teaching effect.
Owner:INNER MONGOLIA YIN CHAO JI LIAO WATER SUPPLY CO LTD +1

Obtuse angle sliding blackboard

The utility model provides an obtuse-angle sliding blackboard, which includes a main frame, two sliding plates, a linear drive assembly, two angle-changing plates and a first drive assembly. An installation space is formed inside the main frame; the two angle-changing plates are symmetrically arranged on the left and right sides of the installation space, and the angle-changing plates are inclined from the outside to the inside and backward, and the outside of the angle-changing plates is hinged to the main frame; the first drive assembly is arranged on the rear side of the angle-changing plate, and is used to drive the inner end of the angle-changing plate to rotate with its outer end as the rotation axis. The first driving assembly includes a driving plate, a guide frame, a motor assembly and a driving column. The driving plate is connected to the rear side of the variable angle plate, and a guide groove is provided on the driving plate; a driving block and a screw are provided on the upper side of the guide frame, and the driving block is slidably arranged on the guide frame; the screw is arranged at an angle to the guide groove, and the screw passes through the driving block and is threadedly engaged with the driving block; the power output end of the motor assembly is connected to the screw to drive the screw to rotate; the driving column is connected to the driving block and passes through the guide groove, and the driving column is suitable for moving in the guide groove along the extension direction of the screw to drive the variable angle plate to rotate.
Owner:SHIJIAZHUANG KEDA STATIONERY

Multifunctional English teaching device

The invention discloses a multifunctional English teaching device, and particularly relates to the technical field of teaching equipment.The multifunctional English teaching device comprises a moving table and two protection plates, the top of the moving table is fixedly connected with two supporting seats, the two supporting seats are hinged to the same writing board through pin shafts, a moving groove is formed in the top of the moving table, and the two protection plates are arranged in the moving groove. Two sliding grooves are formed in the top of the movable table, two dovetail grooves are formed in the two sides, close to each other, of the two protection plates, and the adjusting assembly comprises two fixing blocks fixedly connected to the rear side of the writing board. Through cooperation of the adjusting assembly and the protection assembly, the device can adjust the height and the rotation angle of the writing board, the inclination degree of the writing board can be flexibly adjusted, it is ensured that each user can find the most suitable writing angle, and therefore the learning efficiency and the writing comfort degree are improved; therefore, writing preferences of different users and diversified teaching scenes can be catered.
Owner:夏坤

Multifunctional portable Chinese teaching board

The invention discloses a multifunctional portable Chinese teaching board, and relates to the technical field of teaching equipment. The teaching aid comprises a base, a supporting frame is arranged at the top of the base, an adjusting frame is arranged on one side of the supporting frame, and a teaching material plate is arranged in the supporting frame; an adjusting assembly is arranged at the top of the base and comprises a movable shaft, the movable shaft is movably connected between the two sets of teaching material plates, a rotating shaft and a moving shaft are fixedly connected to the two sides of each teaching material plate respectively, supporting shafts are fixedly connected to the top and the bottom of each teaching material plate, and the teaching material plates are rapidly folded through the adjusting assembly. Through the arrangement of the adjusting assembly, after teaching is finished, the moving shaft is manually pushed, the moving shaft pushes the two adjacent teaching material plates to incline with the movable shaft as the axis, the rapid folding function is achieved, meanwhile, the multiple teaching material plates can be folded mutually, the occupied space is reduced, adjustment is flexible, hiding is convenient, and the utilization rate of the classroom space is increased.
Owner:范新强