中央控制的气流和旋转灵活的中等的压力线。
Through this high pressure line, mud is pumped in to the standpipe and drill pipe.通过这根高压管线,泥浆被泵入立管和钻忏杆。
The principle of high-pressure line protecting and realized means of protector are described.论述了脉冲式高压线路保护的基本原理以及基于该原理的保护装置的实现方法。