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31. | pitching of locomotive |
| 机车纵向摇摆 |
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32. | An act of tumbling;a fall. |
| 摇摆;跌倒 |
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33. | A wobble or roll. |
| 摇晃或摇摆 |
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34. | motion recorder |
| 摇摆参数记录器 |
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35. | The swings back and forth. |
| 秋千前后摇摆。 |
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36. | average swing angle |
| 平均摇摆角 |
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37. | A wobbling motion. |
| 摇摆的动作 |
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38. | The leaves dangled in the wind. |
| 树叶随风摇摆。 |
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39. | hydraulic oscillating cylinder |
| 液压摇摆油缸 |
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40. | The branches of the willow trees swayed in the breeze. |
| 柳枝迎风摇摆。 |
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