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| 21. | ratchet ring spanner |
| 棘轮梅花扳手 |
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| 22. | ratchet wheel screw |
| 大钢轮螺钉 |
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| 23. | running ratchet trai |
| 回转棘轮装置 |
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| 24. | ratchet wrench socket |
| 棘轮板手套筒 |
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| 25. | ratchet blocking system |
| 棘轮闭锁装置 |
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| 26. | ratchet handle spanner |
| 棘轮单头扳手 |
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| 27. | ratchet cover plate |
| 棘轮盘|棘轮盖板 |
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| 28. | ratchet type rollfeed |
| 棘轮式滚轴送料 |
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| 29. | ratchet effect theory |
| 棘轮效应理论 |
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| 30. | friction ratchet stop |
| 摩擦棘轮停止器 |
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