circulation pipe meaning in Chinese

循环管路

11 before making mud , clean all the circulation pipe - line and mud pits
配浆前要认真清洗循环管线和配浆池。
For new structure , it is recommended to install the main and branch circulation pipes of water source & heat pump ac system first and leave its combination collocation for the decoration time according to the practical needs ; and it is more convenient for rebuilt project to adopt the water source & heat pump system and there is no need for the user to worry about establishing the cooling machine room
新建建筑可先安装水源热泵空调循环水管的主管和支管，机组可在用户装修时按实际需要配置，改建工程采用水源热泵系统则更为方便，可以省去用户为建制冷机房增添的烦恼。