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return airway造句

"return airway"是什么意思   

例句與造句

  1. Special support used in haulage way and return airway of 21123 fully mechanized face during larger ground pressure
    21123綜采工作面運(yùn)輸及回風(fēng)巷的特殊支護(hù)
  2. It's difficult to find return airway in a sentence. 用return airway造句挺難的

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