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| 51. | vertical shaft |
| 立井 |
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| 52. | an arrow without a barb; a target arrow. |
| 一种没有倒钩的箭；比赛用的箭。 |
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| 53. | shaft extension |
| 井筒延深 |
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| 54. | output shaft |
| 轮出轴 |
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| 55. | shallow shaft |
| 浅井 |
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| 56. | rotating shaft |
| 旋转轴 |
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| 57. | Clutch shaft |
| 离合器轴 |
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| 58. | flexible shaft |
| 挠性轴 |
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| 59. | vibrating shaft |
| 振动轴 |
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| 60. | elevating shaft |
| 上升轴 |
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