“总管道”的拼音

各种各样的伸缩接头被安装在煤气的总管道上了.Expansion joints of various kinds are fitted on gas mains.水是从总管道来的.Water is supplied from the mains.新房子(的水电)还没接上总管道.The new house is not yet connected to the mains....

“总管道”的英语可以翻译为：main...