water main

n.

给水干管，总水管；

复数：water mains

water main
water main
A design methodology for multiple-contaminant water networks with single internal water main
The occurrence of microorganisms in water main encrustations
Robotic devices for water main in-pipe inspection: A survey
Forecasting Variations and Trends in Water-Main Breaks
A new design method for water-using network of multiple contaminants with single internal water main
Predicting Water-Main Breakage Rates
Degradation of trichloronitromethane by iron water main corrosion products
Water main break rates in the USA and Canada: a comprehensive study