短语词组短語Ball -float valve 浮球閥;繙譯Hydraulic ball float valve 液壓浮球閥pilot operated ball float valve 液控浮球閥Float ball valve 浮動式球閥;球閥;浮動式;浮動球閥float ball selfclosing valve 浮球式自閉閥float ball self -closing valve 浮球式自閉閥 返回 ball float valve