rock drill bit

常見例句

Abrasive particle in the circulation medium from hard rock and drill bit cut the element.
循環(huán)介質(zhì)中的磨料粒子（來自硬巖、鑽頭），對元件進(jìn)行切割；
Our research demonstrate that the drill string vibration is forced vibration, it needs to consider the rock-drill bit-drill string-swivel as the "drill string vibration system";
研究認(rèn)爲(wèi)鑽柱振動(dòng)是一受迫振動(dòng)問題，需要將井底巖石-鑽頭-鑽柱-水龍頭作爲(wèi)一個(gè)“鑽柱振動(dòng)系統(tǒng)”來對待；
www.cea.gov.cn
In order to solve the problem of low efficiency drilling in hard and compact rock with diamond drill bit, efforts were made to manufacture electroplated weakly-bonded diamond bit.
爲(wèi)了解決電鍍金剛石鑽頭鑽進(jìn)堅(jiān)硬致密巖石時(shí)傚低的問題，進(jìn)行了電鍍?nèi)醢偨饎偸嶎^的研究。

But for shale gas, once the drill reaches the shale rock underground, the drill bit is turned horizontally to bore a well that stretches through the natural gas producing shale.
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