rock drill bit

常見(jiàn)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(lái)自硬巖、鉆頭），對(duì)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)為鉆柱振動(dòng)是一受迫振動(dòng)問(wèn)題，需要將井底巖石-鉆頭-鉆柱-水龍頭作為一個(gè)“鉆柱振動(dòng)系統(tǒng)”來(lái)對(duì)待；
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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.
為了解決電鍍金剛石鉆頭鉆進(jìn)堅(jiān)硬致密巖石時(shí)效低的問(wèn)題，進(jìn)行了電鍍?nèi)醢偨饎偸@頭的研究。

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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