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71. | local rail service |
| 区内铁路服务 |
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72. | insulated rail joint |
| 绝缘轨道节 |
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73. | adjustable curtain rail |
| 楞调节式窗帘轨 |
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74. | flat champignon rail |
| 平头钢轨 |
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75. | adjustable rail gauge |
| 可调的轨距规 |
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76. | double rail logic |
| 双线逻辑 |
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77. | sliding door rail |
| 推拉门滑轨 |
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78. | light rail transport |
| 轻轨铁路运输系统 |
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79. | drawbridge rail lock |
| 开合桥钢轨锁闭器 |
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80. | diesel rail car |
| 内燃轨道车辆 |
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