Irrigation: No untreatedsewage water may be used for irrigation.
灌溉:任何没有经过处理的污水沟都不能用于灌溉。
2
The characteristics of urban untreatedsewage source and urban untreatedsewage source heat pump are analyzed and studied.
分析探讨了城市原生污水源的特点及其热泵系统的优缺点。
3
Nano anti -fouling coating is one of efficient measures for solving pipe fouling problem in the urban untreatedsewage cooling and heating source system.