closed drain

密闭排放,Closed... ... ) closed drain pump 闭式排放泵 ) Closed Drain 密闭排放 ) sealed methane drainage 密闭抽放 ...

暗管的英语翻译，暗管用英... ... underground silo 地下管道；暗式管道；地埋管 closed drain 发音播放 subsurface drain 发音播 …