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Planetary gear model mechanical principle demonstration teaching aids 3D printing
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$15.90
| Weight | 0.16 kg |
|---|
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Simulation point:1. The appearance is quite like the head of an early Chinese tractor.2. Must be shaken to reach a certain speed to start.3. There is a throttle.4. If the resistance is too large, the speed will be turned off when the speed is lower than a certain value.SKU: 3D10
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