探访郭公庄水厂：为南水北调水源进京而建的水厂

 
Comment(s)打印 E-mail 中国网　2015-12-05
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图为北京市自来水集团党委宣传部部长向记者介绍水厂处理工艺和水质参数。【中国网 何珊 摄】

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