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| 61. | tunnel engineering |
| 隧道工程 |
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| 62. | horseshoe tunnel |
| 马蹄形隧道 |
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| 63. | annealing trunnel |
| 退火隧道 |
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| 64. | tunneling formwork |
| 隧道模板 |
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| 65. | recovery vehicle [tunnel] |
| 救援车辆〔隧道〕 |
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| 66. | tunnel emission |
| 隧道发射 |
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| 67. | tunnel breakdown |
| 隧道哗 |
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| 68. | tunnel resistor |
| 隧道电阻器 |
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| 69. | tunnel clearance |
| 隧道限界 |
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| 70. | Beacon Hill Tunne |
| 笔架山隧道 |
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