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| 沉埋法 | |||
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| 沉埋式隧道 | |||
| 悬浮隧道; 水下隧洞; 水下隧道; 水底隧道; 沉管隧道 | |||
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submerged tunnelling : 3 phrases in 1 subject |
| Engineering geology | 3 |
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