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backflow preventer例句_backflow preventer英汉例句_backflow preventer双解例句_歐米惠必应词典
歐米惠必应词典

backflow preventer

B 开头单词

常见例句

    雙語例句

  • The backflow preventer must be installed upstream of the regulator.
    防倒流裝置必須安裝在調節閥的上遊位置。
  • The relief valve may be serviced while on or off the backflow preventer valve.
    可以在防廻流閥上維脩安全閥，或將其從防廻流閥拆卸下來維脩。
    • 返回 backflow preventer