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71. | traction system |
| 牵引系统 |
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72. | driving chain sprocket |
| 牵引链轮 |
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73. | industrial frequency traction |
| 工频牵引 |
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74. | trailing characteristics |
| 牵引特性 |
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75. | Pull-and-out block |
| 牵引复滑车 |
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76. | traction element |
| 牵引元件 |
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77. | pulling equipment |
| 牵引设备 |
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78. | tractive magnet |
| 牵引电磁铁 |
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79. | traction coefficient |
| 牵引系数 |
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80. | vehicle tractive capacity |
| 牵引能力 |
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