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sliding rheostat physics experiment instrument primary Senior high school teaching equipment electrical circuit demonstration teaching aids
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Advanced Arm Blood Pressure Measurement Training Model
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Terminal Cap Crimp Cap Terminal Block Experimental Wire Connection Nut Experimental Equipment Accessories Teaching Instrument
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Flat bottom flask 250ml borosilicate high temperature resistant flat bottom round belly flask laboratory consumables
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J2150 Object Center of Gravity Demonstrator 7 Kinds of Aluminum Plate Physics Teaching Instruments Equipment for the Center of Gravity of Plate Objects
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Lever ruler pulley set wheel shaft gear set and bracket hook weight bracket elementary school scientific mechanics experimental equipment
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Teaching Instrument Digital dynamometer 2n-20n, can be used as English version, factory direct sales
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Absorbent Paper Oak Microscope Slide Cleaning Dust Removal Wipe Paper Biochemistry Laboratory Teaching Consumables
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Electrostatic induction motor J23008 electrostatic generator electrostatic demonstration experiment electrical teaching instrument
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