cooling water softening
in-plant water softening
water softening
硬水软化
水质软化
水的软化
水软化处理
水软化
软水法
水致软化
水软化<作用>
软化
water softening apparatus
water softening equipment
Organosilicon Softening Agent
process softening agent
balance between water supply and water demand
brackish water and semi-saline water
brackish water to salt water
conjunctive use surface water and ground water
continuous stress-day index of water logging and excessive soil water