water for fire-fighting purpose 消防用水

Water Circulating Multi-purpose Vacuum Pump 循环水真空泵

dual-purpose power and water plant 水电联产

multi-purpose water 多功能水

steam and water dual-purpose 汽水两用

multi purpose water supply 多目标供水

multi-purpose water supply 多目标供水

dual purpose steam water boiler 汽水两用锅炉

multi-purpose use of water 水的综合利用