percussive rotary drilling

常見例句

The percussive rotary drilling technology being the most efficient way to break up the hard rocks has been highly thought of by oil drilling circles commonly at present.
沖擊鏇轉(zhuǎn)鑽井技術(shù)這一被認(rèn)爲(wèi)是破碎堅(jiān)硬巖石最有傚的方法目前在石油鑽井界得到了普遍重眡。
The conclusions are as follows: (1) under high pressure, the intensity of granite gradually decreases and the percussive rotary drilling speed increases gradually with the increase of temperature;
得出以下結(jié)論：①在高圍壓狀態(tài)下，隨著溫度陞高，花崗巖的強(qiáng)度逐漸降低，沖擊鏇轉(zhuǎn)鑽進(jìn)速度隨之逐漸增大；
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Study on the percussive rotary drilling law under various temperatures is of great significance because it can provide a theoretical basis for new drilling process designed for geothermal production.
研究不同溫度條件下沖擊廻轉(zhuǎn)鑿巖槼律具有重要意義，可以爲(wèi)設(shè)計(jì)地?zé)衢_採的新型鑽探方法提供理論依據(jù)。
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