A massive rock fall trapped the men as they operated a tunnelling machine.
那些男人在驾驶隧道掘进机时，一次大面积的岩崩困住了他们。
Tunnelling under the English Channel is a big proposition.
这不是个赚钱的事业。
Shield tunnelling construction key parameters were checked.
验算盾构施工关键参数。
The effect of resonant-tunnelling appears in the structure.
在多量子阱结构中可看到明显的共振隧穿效应。
The last is implementation for Fast Connect and Tunnelling two new mechanisms.
三是快速连接和隧道技术两种新机制的实现。
The last is implementation for Fast Connect and Tunnelling two new mechanisms.
三是快速连接和隧道技术两种新机制的实现。
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