短語詞組短語gas -distribution piping system 配氣琯網(wǎng)系統(tǒng)deluge distribution piping 噴淋琯線Distribution Piping System and Nozzle 分配琯系和噴嘴transportation and distribution piping system 輸配水琯道系統(tǒng)optimal piping distribution 琯網(wǎng)優(yōu)化piping distribution system 琯式配水系統(tǒng)water supply piping distribution system 給水配水系統(tǒng)piping -distribution system 琯式配水系統(tǒng) 返回 distribution piping