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backflow preventer例句_backflow preventer英汉例句_backflow preventer双解例句_果味酸柯林斯词典
果味酸柯林斯词典

backflow preventer

B 开头单词

常见例句

    双语例句

  • The backflow preventer must be installed upstream of the regulator.
    防倒流装置必须安装在调节阀的上游位置。
  • The relief valve may be serviced while on or off the backflow preventer valve.
    可以在防回流阀上维修安全阀，或将其从防回流阀拆卸下来维修。
    • 返回 backflow preventer