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71. | cruising speed |
| 航速 |
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72. | equivalent speed |
| 当量速度 |
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73. | estimated speed |
| 估计航速 |
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74. | speed instability |
| 速度不稳定性 |
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75. | economical speed |
| 经济车速 |
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76. | propeller speed |
| 螺旋桨转速 |
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77. | discharging speed |
| 卸料转速 |
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78. | speed calculator |
| 速度计算器 |
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79. | characteristic speed |
| 特征车速 |
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80. | speed tolerance |
| 容许转速偏差 |
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