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hoisting and lowering中文是什么意思

发音:  
用"hoisting and lowering"造句"hoisting and lowering"怎么读"hoisting and lowering" in a sentence

中文翻译手机手机版

  • 升降钻具

例句与用法

  • The meteorological station was automated in 1992 and scientific assistants were no longer posted at cheung chau . the task of hoisting and lowering of signals was taken over by the property attendants
    一九九二年航空气象站转为自动气象站后,便再没有科学助理当值,只留下产业看管员驻守,负责悬挂风球。
  • The meteorological station was automated in 1992 and scientific assistants were no longer posted at cheung chau . the task of hoisting and lowering of signals was taken over by the property attendants
    一九九二年航空气象站转为自动气象站后,便再没有科学助理当值,只留下产业看管员驻守,负责悬挂风球。
用"hoisting and lowering"造句  
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