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Ups and downs block

Ups and downs block

Gear with stand

Gear with stand

Model of plane’s rising theory

Model of plane’s rising theory

Inclined plate

Inclined plate

Synthesis and decomposition of movement

Synthesis and decomposition of movement

Vacuum and pressure pump

Vacuum and pressure pump

Spiral Springs

Spiral Springs

Rotate support

Rotate support

Inflating pump

Inflating pump

Air respurce

Air respurce

Air Cushion Trail

Air Cushion Trail

Spring Vibrator

Spring Vibrator

Diesel engine model

Diesel engine model

Newton's first law

Newton's first law

Mannual Vacuum Pump

Mannual Vacuum Pump

Demonstration of overweight and weightlessness

Demonstration of overweight and weightlessness

Track and small vehicle for demonstration

Track and small vehicle for demonstration

QH 62006 Dry tube

QH 62006 Dry tube

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