地下管道网的英文

• underground conduit net

• 地下:    on the ground
• 管道网:    grid; network of pipe lines
• 地下管道:    buried piping; covered conduit; pipe subway; sunken pipe; under-ground conduit (pipeline); underground conduit; underground ducting; underground pipe line; underground pipeline
• 地下管道阀:    culert ales; culvert valves
• 地下管道图:    underground piping drawing