Similar to the Seattle project, this one required new drilling techniques, including the use of probe holes to assess ground conditions ahead of the huge tunnel-boring machines (TBM).

与西雅图的工程相似的是，这里的项目也需要新的钻探技术，包括在上马巨型隧道掘进机(TBM)前使用探孔来评估土质条件。

youdao

Set up and operate machine tools to perform repetitive machining operations, such as turning, milling, drilling, boring, planing, honing, broaching, grinding or other machining operations.

安装和操作机器工具来执行反复加工操作，如车，铣，钻，镗，刨，珩磨，拉削，磨削或其他加工业务。

youdao

David: How can the machining centers perform so many operations, such as milling, drilling, or boring?

大卫：加工中心怎样执行这么多的操作，比如铣、钻或镗？

youdao

Chevron began drilling this ultradeep well over a year ago, with the objective of boring down to big sub-salt prospects 29, 000 feet beneath the surface.

FORBES: Chevron Makes Big Discovery In Louisiana - And It's Not Even Done Drilling Yet