加压力大、提拔力大、输出扭矩大，钻探能力强，能满足深孔钻探的需要。

Strong plus pressure, strong elevation force, large output torque and strong drilling capacity can satisfy the demand for deep hole drilling.

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救援队正在向330多米深的井下钻探另外三个深孔，以排出有毒气体，然后到达一个六米宽的井室，有关官员认为四名矿工就困在这个井室。

Rescue teams are drilling three additional boreholes more than 330 meters deep to ventilate toxic gases and reach a six-meter-wide chamber where officials believe the miners are.

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钻孔偏斜、孔深、岩石硬度被公认为是影响钻探生产效率与成本的三大要素。

As we know, inclining drilling, the depth of drilling and rock hardness is three factors influencing drilling production efficiency and cost.

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