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direct circulation中文是什么意思

发音:  
用"direct circulation"造句"direct circulation"怎么读"direct circulation" in a sentence

中文翻译手机手机版

  • 环环流
  • 正环流
  • 正循环
  • 直接环流

例句与用法

  • Abstract : the paper presented a kind of drilling hole method that adopted direct circulation and percussion drilling , casing and cliff - protection by mud . the method applied in the complex gravel layer which has the trend to emerge cave - in and drop from the drilling wall
    文摘:介绍一种在砂卵石地层层厚复杂、孔壁易掉块、易坍塌的钻孔的成孔方法? ?正循环回转与冲击钻进、套管与泥浆护壁成孔。
用"direct circulation"造句  

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