Learning device suitable for business administration major learning
A learning device, professional technology, applied in blackboard or slate cleaning devices, chemical instruments and methods, reusable writing boards, etc., can solve problems that affect the course progress, consume a lot of time, arm pain, etc., to protect the human body Healthy, avoid the effect of dust flying
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[0026] Example: such as Figure 1-5 As shown, the present invention provides a kind of learning device that is suitable for business administration professional study, comprises blackboard body 1, blackboard eraser 2 and dust accumulation box 3, and blackboard eraser 2 is movably arranged on one end of blackboard body 1 side, and dust accumulation box 3 One side is movably set on one side of the blackboard body 1, the blackboard eraser 2 is attached to the dust box 3, one side of the blackboard body 1 is fixed with a fixing plate 4, and both ends of one side of the blackboard body 1 are provided with through grooves 5;
[0027] One end of the fixed plate 4 is fixedly provided with a motor 6, and the end of the output shaft of the motor 6 runs through one end of the fixed plate 4, and the end of the output shaft of the motor 6 is fixedly provided with a threaded rod 7, and one end of the threaded rod 7 is rotated and inserted into the fixed One end of the board 4, the threaded...
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