Dual Check Vacuum Breakers for In-Line Applications are used for continuous pressure, non-health hazard, applications. These valves have NPT female inlet and outlet connection and brass body construction.是什么意思_Dual Check Vacuum Breakers for In-Line Applications are used for continuous pressure, non-health hazard, applications. These valves have NPT female inlet and outlet connection and brass body construction.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句