Factory direct supply laboratory consumables absorbent paper filter oil filter paper laboratory round qualitative filter paper wholesale
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gastric anatomy model biological model junior high school biology experiment equipment middle school biology teaching anatomy model
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Semiconductor Refrigerator 24066 Demonstration Thermoelectric Power Generation Dual-purpose New Curriculum Standard Senior high school Physics Experimental Equipment Textbook
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25112X-ray demonstration instrument high school physics experiment equipment teaching instrument teaching aids X-ray demonstration instrument
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Rope Wave Demonstrator 22013 Rope Standing Wave Demonstrator Senior high school Physics Experimental Equipment Teaching Instrument Laboratory Equipment
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22224 Gay-Lussac Law Demonstrator Gas Same Thermal Expansion Coefficient Senior high school Physics Experiment Instrument
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23008 Electrostatic Induction Motor Initial Senior high school Physics Experiment Discharge High Voltage Teaching Instrument Leaton Bottle
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Senior high school statics demonstration board Senior high school instrument mechanics demonstration board Senior high school physics experiment teaching teaching instrument
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J2438 Millikan Oil Droplet Meter Charge Verification Initial Senior high school Physics Experiment Equipment Teaching Instrument Teaching Aware Brown
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23050 force between charges demonstrator Coulomb's law The same kind of charge repels each other Senior high school physics
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Cohesion Demonstrator Lead Block Molecular Gravity Primary Experimental Equipment Cohesion Experimenter Primary Senior high school Teaching Instrument
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Initial Senior high school Electrolyte Solution Conductivity Demonstrator J26010 Solution Conductivity Experimenter Experimental Instrument Teaching Aware
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Contact voltage regulator 220v single-phase 5KVA10Kw15 autocoupler 20K AC power adjustable transformer teaching aid
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Air compression ignition instrument J22203 junior high school physics thermal teaching experimental instrument equipment mechanical thermal energy conversion
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submarine terrain model middle school junior high school geography teaching instrument teaching aids ocean ridge land mountain equipment model
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24042 single-turn coil motor principle demonstrator Senior high school physics experiment equipment teaching instrument AC DC
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