常見(jiàn)例句雙語(yǔ)例句Diamond drilling replaced percussion drilling .金鑽探取代了沖擊鑽探。www.translation-dictionary.netIt is difficult to calculate the penetration rate (ROP) of percussion drilling.鑽井機(jī)械鑽速預(yù)測(cè)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(zhǎng)時(shí)間裡他們用沖擊鑽井——基本上就是不停地砸地麪，直到砸不動(dòng)。 返回 percussion drilling