A massive rock fall trapped the men as they operated a tunnellingmachine.
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。
《柯林斯英汉双解大词典》
2
A thrust hydraulic system of shield tunnellingmachine integration of pressure and flow control was designed.
设计了一种基于压力流量复合控制的盾构推进液压系统。
3
A thrust hydraulic system of shield tunnellingmachine with pressure and flow compound control was designed, and hydraulic cylinders were also controlled in groups.