哈尔滨环境用水
environmental useful water in Harbin
锅炉用水硬度
Hardness of the water used in boiler
灌溉用水与排放水
irrigation and sewage water
灌溉用水有效利用系数
effective utilization coefficient of irrigated water
irrigation water use efficiency
Water Use of Irrigation
灌溉用水水质标准
irrigation water quality standards
灌溉用水定额
irrigation water quota
the norm of irrigation
dynamic layout and irrigated water ration
irrigation water qutoa
灌溉用水
irrigation water resource
irrigation water
irrigation water demand
管网饮用水
drinking water pipe network