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| 21. | effective rolling radius |
| 有效滚动半径 |
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| 22. | free-rolling action |
| 自由滚动作用 |
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| 23. | rolling hinged support |
| 滚动铰支座 |
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| 24. | rolling lift bridge |
| 滚动升降桥 |
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| 25. | negative rolling extension |
| 消极滚动延期 |
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| 26. | rolling moment coefficient |
| 滚动力矩系数 |
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| 27. | rolling wear test |
| 滚动磨损试验 |
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| 28. | rolling contact bearing |
| 滚动接触轴承 |
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| 29. | positive rolling extension |
| 积极滚动延期 |
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| 30. | rolling resistance moment |
| 滚动阻力矩 |
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