Three-hole pressure cylinder Physical science Mechanics Pressure and pressure Experimental relationship between internal pressure and depth of liquid

Measuring the average speed, sliding friction, two-force balance, inclined plane, trolley, wooden board, stopwatch, hook code, mechanics teaching instrument

Absorbent paper 100 sheets/box absorbent cotton wipe slide slice paper absorbent paper teaching test paper for biochemical experiments

Bamboo Test Tube Clip Glass Burning Bottle Clip Glass Tube Clip Suitable for 12~25mm Chemical Experiment Supplies Teaching Instrument

Special Clamp for Electric Spark Timer Stainless Steel Clamp Electromagnetic Dot Timer Fastening Physical Experiment Equipment

photoelectric effect demonstrator photoelectric tube micro-current amplifier physics experiment equipment teaching instrument for teachers

Carbon dioxide fire extinguishing principle experimental device iron frame fixed candle holder ladder iron chemical science experiment

Magnetic lever ruler base sucker can suck blackboard teaching demonstration physical mechanics experimental equipment science and education instrument

Optical fiber application demonstrator 25002 new curriculum standard Senior high school physics experiment optical fiber propagation teaching instrument material

Faraday cylinder demonstrator electrostatic charge distribution on the outer surface of the conductor experimental Senior high school physics teaching instrument material

Light reflection experiment instrument new physical light reversible demonstrator atomizer laser pointer teaching instrument teaching aid

304 stainless steel tweezers with tooth non-slip straight round head biological anatomy experiment chemical household dressing tweezers repair clip

Electromagnetic relay demonstration board physical electricity electromagnetic effect normally open and normally closed circuit experimental equipment teaching instrument

Three prism optical experiment glass rainbow seven color photography props student physics teaching equipment refractoscope

Light Propagation Reflectance Experiment Device 2 Laser Pens for Junior High School Physical Optics Experiment Equipment Teaching Aware

Burning cup clamp glassware fixture laboratory anti-slip iron clamp chemical experiment tools teaching equipment teaching aids

New Curriculum Standard Inclined Car Set Scale Long Board Friction Block Object Motion Average Speed Physical Instrument Material

Metal inclined plane demonstration with scale angle device adjustable height with pulley physical mechanics experimental teaching instrument material

Exploring Yeast Breathing Mode Aerobic Respiration Anaerobic Respiration Biological Experimental Teaching Equipment Erlenmeyer Bottle Catheter

Explore the curved motion speed direction of the object demonstrator Senior high school physics teaching experimental instrument equipment arc track

Sliding rheostat simulator 20 ohm 2A sliding rheostat LED lamp display current direction self-made rheostat instrument

Hand-cranked generator model diode AC/DC generator teaching physical instrument scientific inquiry experimental equipment

Inertial experimental equipment demonstrator Niu Yi law of motion physical mechanics experimental equipment wood chip metal Pinball

Inertial demonstrator Niu Yi law of motion physical mechanics experimental equipment wood chip metal pinball teaching aids

Light refraction reflection demonstrator refraction foldable junior high school physics optical experiment equipment junior high school students teaching

Boyier's law demonstrator pressure and volume relationship J22223 high school physics experiment equipment teaching instrument

Capacitor charging and discharging tester demonstrator 303804 high school physics teaching instrument group experimental equipment

Capacitor charging discharge tester physical experiment experiment instrument equipment teaching instrument teaching aids digital display

Vacuum Newton tube wool tube with valve free fall experiment middle school physical equipment teaching instrument teaching aid

Joule law demonstrator digital display electricity meter electric energy heat energy conversion junior high school physics experiment equipment teaching

21024 friction demonstrator digital display screen junior and senior high school physical mechanics experiment teaching instrument experimental equipment teaching

Metal conductor resistance and temperature relationship demonstrator resistance changes with temperature demonstration physics teaching instrument material

Oil film tester physical oil Film method estimation of oleate molecular size oleate single molecule arrangement experimental instrument equipment

Mechanical track car electric spark dotting timer counterweight hammer ink powder paper tape High School physical Test average speed

Oxygen content measuring device oxygen volume content measuring kit chemical experiment equipment teaching aids

Zoom water lens Junior High School optical experiment eyeball simulation myopia hyperopia concave-convex lens imaging optical fixture