城市给水和污水系统的历史、现状和未来
日期:2012-10-06 14:46
ossible in various ways, illustrated in this figure by two options: (1) minimizing pipe controlled water input and export by using additional sources (for instance precipitation) and (2) water re-use and establishing nearly closed water cycles for use beyond the drinking water use. Both types of solutions are made possible today by existing technology
  第三条规则,进行水管理资金、技术和操作经验的国际共享。从全球来看,健康安全用水的缺乏是巨大的,解决这一问题取决于道德的和经济的考量,这已经形成
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