垂直钻进 meaning in English
vertical drilling
Examples
- The mast is raised to the working position by a pair of hydraulic cylinders , and is locked in the vertical drilling position by two hydraulically actuated mast anchor pins
支架通过一对液压缸提升到工作高度，并通过两个液压启动的锚定销锁定在垂直钻进位置。