percussion drilling
常見例句
- Diamond drilling replaced percussion drilling .
金鉆探取代了沖擊鉆探。
www.translation-dictionary.net - It is difficult to calculate the penetration rate (ROP) of percussion drilling.
鉆井機(jī)械鉆速預(yù)測是難題。 - For a long time, they used percussion drilling - which basically means they hammered away at the ground to get as deep as they could get.
很長時間里他們用沖擊鉆井——基本上就是不停地砸地面，直到砸不動。 返回 percussion drilling