水质安全评价
water quality security evaluation
饮用水水质安全
Drinking water quality safety
环境水质
environmental water quality
ambient water quality
灌溉水质
quality of irrigation water
irrigation water quality
water quality
Irrigation water condition
water quality for irrigation
评价水质
water quality evaluation
assessment of water quality
Appraisement on water quality
出水水质
effluent quality
outflow water quality
water quality
Water quality of effluent
permeate water quality
outlet water quality
Effluent
排水水质
quality of discharge water
effluent water quality
矿区水质
Water quality of mining area
改善水质
water quality improvement