主管路的英文

main pipe line

• 主管:    be responsible for ...
• 路:    road; way; path
• 空气主管路:    air main

例句与用法

1. Once the pressure of the main network returns to normal , the valve flap of drainage outlet closes under pressure , first , second level check valves open , the main network return to supply water to branch pipeline
   一旦主管网压力恢复正常，排污口阀瓣受压关闭，一二级止回阀打开，主管路恢复向支管供水。