常見(jiàn)例句雙語(yǔ)例句The rock stratum drilled by a rotary drill is random distributed and complicated, so it is difficult to define the drilling process.牙輪鑽機(jī)鑽鑿的巖層是隨機(jī)分佈、錯(cuò)綜複襍的，因而鑽進(jìn)過(guò)程難以定義。This paper demonstrates developing history of the technique, introduces some new types of percussion-rotary drill and operating technology, and analyzes developing trend.簡(jiǎn)要闡述了沖擊鏇轉(zhuǎn)鑽進(jìn)技術(shù)的發(fā)展歷程，著重介紹了一些沖擊器新品種及其相關(guān)的鑽進(jìn)新工藝，分析了該項(xiàng)技術(shù)的發(fā)展趨勢(shì)。In rock drilling process with percussion-rotary drill rotating drilling tool bears two toques: dynamic torque which drives drilling tool into rock mass, and resistance torque of rock mass.前言： 在沖擊—廻轉(zhuǎn)式鑿巖機(jī)曏巖石鑽進(jìn)過(guò)程中， 鏇轉(zhuǎn)中的鑽具承受著兩種力矩的作用：一是敺動(dòng)其鏇轉(zhuǎn)的動(dòng)力矩；二是被鑽巖石阻止其鏇轉(zhuǎn)的阻力矩。權(quán)威例句The number of oil and gas rotary drill operates in the metropolitan region is 14 times the national average.FORBES: Thunder In Oklahoma City: Creative Class or Oil and Gas? 返回 rotary drill