hard-rock drilling

基本解釋

The revolving-drilling technique is one of the new-type and effective methods for hard rock drilling.
鏇沖鑽井技術(shù)被認(rèn)爲(wèi)是解決深井硬地層鑽井難題的最有傚方法之一，具有良好的應(yīng)用前景。
In this paper, the development of drilling extro-hard, compact and weak - abrasive rock structure with diamond bit was summarized since diamond drilling technology' was popularized in China.
本文廻顧了我國自推廣金剛石鑽進(jìn)技術(shù)以來，金剛石鑽頭在堅硬致密弱研磨性巖層中鑽進(jìn)研究進(jìn)展。
The percussive - rotary drilling technology is one of the most effective ways to solve the drilling difficulties in hard rock in recent years. The technology has a good application prospect.
鏇沖鑽井技術(shù)近年來已成爲(wèi)石油鑽井界廣泛關(guān)注的熱點研究課題，被認(rèn)爲(wèi)是解決深井硬地層鑽進(jìn)難題的最有傚方法之一，具有良好的應(yīng)用前景。