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| 71. | tunnel facility |
| 隧道设施 |
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| 72. | under river tunne |
| 河底隧道 |
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| 73. | Tunnel ahead |
| 前有隧道 |
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| 74. | tunnel ventilation |
| 隧道通风 |
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| 75. | Huangtuling Tunnel |
| 黄土岭隧道 |
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| 76. | tunnel drilling rig |
| 隧道钻孔机 |
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| 77. | railway tunnel |
| 铁路隧道 |
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| 78. | tunnel perimeter |
| 隧道周边 |
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| 79. | navigation tunnel |
| 通航隧道 |
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| 80. | tunneling electron |
| 隧道电子 |
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