closed drilling 中文意思是什麼

closed drilling 解釋
窄行播種
  • closed : adj. 1. 關閉著的，封閉著的；密閉著的；保密的。2. 〈美國〉準備好了的；定了契約的。3. 【語音】閉音節的。
  • drilling : n 1 鉆孔；【礦物】鉆井；〈pl 〉鉆屑，鉆粉。2 操練，訓練。n 【農業】條播。 ridge [furrow] drilling...
  1. Advanced bottom hole drilling tools and the rotary steering closed loop system

    現代井下鉆井工具及旋轉導向閉環鉆井系統
  2. This valve password security with anti - lock drilling, sawing defense, anti - pull, anti - opened, and other functions, each different password locks can be installed, when the valve installed in open or closed, the valve at hand round idling state

    這種閥門密碼防盜鎖具有防鉆、防鋸、防拉、防開啟等功能，每個鎖具均可設置不同密碼，當閥門設置在開啟或關閉狀態時，閥門手輪處于空轉狀態。
  3. This kind of shaker has such features : its self - cleaning effect is powerful, no phenomena of screen pasting and screen jam happen, when improving the treating capacity by increasing throwing coefficient, the phenomena of drilling fluids spattering can be avoided, so that screening - separating drilling fluids in closed space can be realized. hence, this new kind of shale shaker will find its application in the new drilling techniques such as under - balanced drilling

    其主要特點是：自潔作用很強，沒有「篩糊」 、 「篩堵」現象；採用大拋擲指數提高振動篩處理能力時可避免鉆井液的劇烈飛濺現象；可實現在封閉的空間里進行鉆井液的篩分，因而在欠平衡鉆井等新鉆井技術的應用中也可發揮其用武之地。
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