To investigate automobile exhaust gas pollutant status of underground garage in city, two hotels of Jingan district were selected as investigated object and a underground hall as the control to study exhaust gas pollution level.

 
  • 以上海市静安区两个宾馆的地下车库为研究对象,并以该区某地下会堂为对照,调查了地下车库中废气污染状况。
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