管道工程管(组);
英文例句/中文翻译:
pumps do not actually suck ; rather , pumps create a partial vacuum into which atmospheric pressure pushes water via the suction pipework.
水泵并不是实际的吸:更确切的说,水泵产生非完全的真空,然后大气压力将水通过吸管推进水泵中。
means for resealing threaded joints of gas pipework in buildings.
建筑物燃气管道工程的螺纹接头再密封的方法
development of hydraulic pipework flushing system
液压管路冲洗系统的研制与开发