基本解釋回流防止器；防止回流設(shè)施英漢例句雙語(yǔ)例句The backflow preventer must be installed upstream of the regulator.防倒流裝置必須安裝在調(diào)節(jié)閥的上游位置。The relief valve may be serviced while on or off the backflow preventer valve.可以在防回流閥上維修安全閥，或?qū)⑵鋸姆阑亓鏖y拆卸下來(lái)維修。backflow preventer更多例句詞組短語(yǔ)短語(yǔ)backflow w preventer 回流防止器BFP Backflow Preventer 回流防止器Low -resistance backflow preventer 低阻力倒流防止器Reduced pressure zone backflow preventer 減壓回流防止閥Reduced -pressure type backflow preventer 減壓型倒流防止器backflow preventer更多詞組專(zhuān)業(yè)釋義土木建筑工程防回流裝置