短语词组短語Automatic reflux control valve 自動廻流控制閥reflux x valve 逆流閥reflux valve return valve 廻流閥Aetv Reflux valve 和背壓閥;逆流閥recoil type reflux valve 廻彈式逆流閥reflux valve west bank 防逆閥valve reflux 瓣膜返流 返回 reflux valve