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词汇 full-face tunnelling
释义 full-face tunnelling
基本例句
全面开挖
In many projects, like the Simplon, for example, a small pilot tunnel is driven before the full diameter of the tunnel is excavated.在许多隧道工程中,经如辛普龙大隧道,都要在隧道全面开挖前打一个导洞。
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