Normal drilling system 正常钻进系统
resume normal drilling 恢复正常钻进
normal-circulation rotary drilling 正循环旋转钻进
normal & reverse circulation drilling 正反循环钻进
The driller resumes normal drilling operations.
司钻恢复正常钻井作业。
The noise sources of drilling production are analysed. The noise from main station of normal drilling work is also investigated in this paper.
本文对钻井生产的噪声源进行了分析,同时也对正常钻井作业时的主要岗位点的噪声进行了调查。
Relative technical measures shall be employed for starting drilling, initial drilling, normal drilling and arrival drilling of shield machine.
对盾构机始发掘进、初期掘进、正常掘进、到达掘进分别采取相应的技术措施进行掘进。
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