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14014 Students Digital Demonstration Digital Display Force Spring Scale Primary Senior high school Physics Teaching Instrument

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Magnetic molecular model simulation magnetic molecular structure model projective simulation magnetization demagnetization phenomenon 24 magnetic needle

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Metal hook 10g20g50g100g200g lever ruler combination hook weight initial Senior high school slot code physical experiment

Diaphragm Movement Simulator Large-size Teacher Demonstration Lung Working Principle Experimental Teaching Aware Lung Respiratory Model

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Junior High School Teaching Instrument Small Transformer Demonstration with Detachable Transformer Electrical Demonstration Experimental Equipment

21007 Archimedes law principle experiment demonstrator physical mechanics buoyancy dynamometer overflow Cup equipment

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Plastic Double-headed Medicine Spoon, Plastic Medicine Spoon, 20cm Sampling Medicine Spoon Can Be Used by Two Heads, Laboratory Medicine Spoon