... 钻井驳船：drilling barge,drilling scow,barge unit 钻井变量：drilling variable 钻井报表：driller's report ...
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controllable drilling variable 可控钻井参数
non controllable drilling variable 不可控钻井参数
multi-variable drilling rate equation 多元钻速方程
PDC variable diameter drilling bit PDC变径钻头
variable drilling rate equation 多元钻速方程
variable frequency drilling rig 变频钻机
AC variable frequency drilling rig 交流变频钻机
Providers rotation torque to 17,500 ft-lbs (23,727 Nm) with variable rotation speed to 180 RPM for exceptional horizontal and direction drilling performance.
最高转矩17，500 英尺·磅（23，727 牛顿·米），可变转速最高180 转/分，带来无与伦比的水平钻井与定向钻井性能。
On the basis of optimized vibratile drilling mono -material test, the optimized value variable parameter is selected for vibratile drilling test of two kinds laminated materials.
在单材料优化振动钻削实验的基础上，进行了两种叠层材料按优化值变参数的振动钻削实验。
On the basis of optimized vibratile drilling mono-material test, the optimized value variable parameter is selected for vibratile drilling tesl of two kinds laminated materials.
在单材料优化振动钻削实验的基础上，进行了两种叠层材料按优化值变参数的振动钻削实验。
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