冲旋钻井技术是一种新型、高效钻进硬地层的方法。

The revolving-drilling technique is one of the new-type and effective methods for hard rock drilling.

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旋冲钻井技术是一项新型的石油钻井工艺技术，是提高硬地层钻井效率的有效方法之一。

Rotary impact drilling is a new petroleum drilling technique, is one of effective methods to increase drilling efficiency in hard formations.

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旋冲钻井技术被认为是解决深井硬地层钻井难题的最有效方法之一，具有良好的应用前景。

It is con - sidered revolving drilling technique is one of the most effective methods to solve the problem of hard strata drilling in deep well and has good applying prospects.

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