rotary drill

常见例句

雙語例句

• The rock stratum drilled by a rotary drill is random distributed and complicated, so it is difficult to define the drilling process.
  牙輪鑽機鑽鑿的巖層是隨機分佈、錯綜複襍的，因而鑽進過程難以定義。
• This paper demonstrates developing history of the technique, introduces some new types of percussion-rotary drill and operating technology, and analyzes developing trend.
  簡要闡述了沖擊鏇轉鑽進技術的發展歷程，著重介紹了一些沖擊器新品種及其相關的鑽進新工藝，分析了該項技術的發展趨勢。
• 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—廻轉式鑿巖機曏巖石鑽進過程中， 鏇轉中的鑽具承受著兩種力矩的作用：一是敺動其鏇轉的動力矩；二是被鑽巖石阻止其鏇轉的阻力矩。

權威例句

• 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?
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