drilling performance curve 钻井特性曲线
improved drilling performance 改善钻井性能
Risk emergency drilling performance 风险应急演练
Performance drilling 钻孔深入率
Drilling performance is stable, accurate size and efficiency.
钻孔性能稳定,尺寸准确、效率。
To raise drilling performance of new micro-drill, a novel method was advanced for reginding of chisel edge.
为了提高新型微钻头的钻削性能,提出了一种适合于微钻头的横刃修磨原理及方法。
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。
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