cable tool drilling 顿钻钻井 ; 钢丝绳钻进 ; 冲钻 ; 绳式顿钻
bamboo skin rope tool drilling 竹弓顿钻
drilling tool [地质] 钻具 ; 孔加工刀具 ; 钻孔工具 ; 钻头
percussion tool drilling 标签 ; 顿钻钻井法
Multi-tool drilling 多工具钻
cable-tool drilling 钢丝绳冲击钻进法
He was a tool pusher essentially, sold drill bits to oil-drilling companies.
他其实就是一个工具推销者，卖钻头给开采石油的公司。
Drilling is performed with a rotating tool called a drill.
钻孔是用一个称为“钻头”的旋转刀具进行的。
Bit is the tool of crash rock and rate of drilling is deep related with type of bit.
钻头是直接破碎井底岩石的工具，钻井速度的高低与钻头类型密切相关。
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