rock drill bit

常见例句

Abrasive particle in the circulation medium from hard rock and drill bit cut the element.
循环介质中的磨料粒子（来自硬岩、钻头），对元件进行切割；
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";
研究认为钻柱振动是一受迫振动问题，需要将井底岩石-钻头-钻柱-水龙头作为一个“钻柱振动系统”来对待；
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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.
为了解决电镀金刚石钻头钻进坚硬致密岩石时效低的问题，进行了电镀弱包镶金刚石钻头的研究。

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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