rock drill bit
常见例句
- Abrasive particle in the circulation medium from hard rock and drill bit cut the element.
循環介質中的磨料粒子(來自硬巖、鑽頭),對元件進行切割; - 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";
研究認爲鑽柱振動是一受迫振動問題,需要將井底巖石-鑽頭-鑽柱-水龍頭作爲一個“鑽柱振動系統”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.
爲了解決電鍍金剛石鑽頭鑽進堅硬致密巖石時傚低的問題,進行了電鍍弱包鑲金剛石鑽頭的研究。 - 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.
FORBES: China Closer To Joining Shale Gas Fracking Craze 返回 rock drill bit