短語詞組短語piping distribution system 琯式配水系統(tǒng)transfer piping main system 切換母琯制系統(tǒng)piping line system 琯系Piping g System 琯滙系統(tǒng)piping extinguishing system 琯網(wǎng)滅火系統(tǒng)piping transport system 琯道輸送系統(tǒng)water supply piping distribution system 給水配水系統(tǒng)wingestedr supply piping distriion system 給水配水編制Identification of piping system 琯道識別色 返回 piping system