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A kind of intelligence system for being used to prevent that student from leaving behind book
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A kind of bookcase of automatic drying
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A kind of bookcase
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One kind dehumidifying bookcase
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A kind of intelligent refrigerator
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A kind of head-rest type hair drying apparatus
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A kind of system of the statistics clothing wearing number based on RFID
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A kind of air dehumidifier
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A kind of system and method for being used to count student's answer number on classroom
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A kind of chalk dust retracting device
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A kind of intelligent light refraction teaching equipment
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A kind of shock-absorption adjusting device of educational projector
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A kind of combined blackboard of slidingtype is wiped
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A kind of simple arrangement for adjusting height of teaching desk
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CN107507499A
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A kind of intelligent optical imaging device
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Sewage treatment method implemented through catalysis and oxidation
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Efficient pressure filtering device
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Ultrafiltration device
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PVC profiled bar
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CN105585799A
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Novel PVC (polyvinyl chloride) tube
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