求助:这段话是什么个意思啊? 谢谢了 在线等待高手? Removal the existing and supply and installation upto date complete set of 4 filtration tanks with capacity range from(4000 to6000 liters) complete set of sterilization unit, complete set of two pumps (oneworking one standby) to supply raw water to filtration tanks, complete set of galvanizedwater pipes ( ranges from DN 150 to DN 65). 查看更多6个回答 . 4人已关注