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| 1. | force of rolling friction |
| 滚动摩擦力 |
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| 2. | friction rolling hatch cover |
| 摩擦滚动舱口盖 |
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| 3. | We must distinguish sliding friction from rolling friction |
| 我们必须把滑动摩擦同滚动摩擦区别开来。 |
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| 4. | moment of rolling friction |
| 滚动摩擦力矩 |
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| 5. | rolling friction |
| 滚动摩擦 |
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| 6. | coefficient of rolling friction |
| 滚动摩擦系数 |
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| 7. | static rolling friction |
| 静滚动摩擦 |
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| 8. | angle of rolling friction |
| 滚动摩擦角 |
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| 9. | kinetic rolling friction |
| 运动滚动摩擦 |
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| 10. | Friction causes a rolling ball to stop finally. |
| 摩擦力使得一只滚动的球最终停了下来。 |
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