The heavy drillingapparatus was blown sky high out of the hole with a tremendous roar.
那沉重的钻井设备随着一声惊人的怒吼，脱离井口，飞向高空。
2
Single pass drillingapparatus, use a one-piece drill bit, method and rock bolt for single pass rock bolting.
单通道钻孔装置，整个钻头的使用，用于单通道岩石锚固的方法和岩石锚栓。
3
In the process of sour gas reservoir development, hydrogen sulfide usually causes corrosions and damages in oil line, casing pipe and drillingapparatus.