中新网国内新闻: 今年北京300余街乡镇将设1000多个粗颗粒物监测站

中新网国内新闻

今年北京300余街乡镇将设1000多个粗颗粒物监测站 www.chinanews.com/gn/2018/05-08/8508734.shtml May 8th 2018, 14:21
  全市将设千个粗颗粒物监测站

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