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backflow pollution造句

"backflow pollution"是什么意思   

例句與造句

  1. Technical specification for prevention of backflow pollution in water supply system
    給水系統(tǒng)防回流污染技術(shù)規(guī)程
  2. It's difficult to find backflow pollution in a sentence. 用backflow pollution造句挺難的

相鄰詞匯

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  7. "backflow prevention device"造句
  8. "backflow prevention valve"造句
  9. "backflow test"造句
  10. "backflow valve"造句
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