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  1. ...two broad heading air pollution question; Roadside air pollution and regional smog question. The roadside air pollution mainly comes from the diesel oil ...

  2. ...參考:http://upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Beijing_ smog _comparison_August_2005.png/300px-Beijing_ smog _comparison_August...

  3. ... produced by industry and motor vehicles. Ozone and smog are created as nitrogen oxides and hydrocarbons react...

  4. ...a decade ago. It is now filmed with a thin layer of photosynthetic smog with is caused by pollutants in the air. (78 words...

  5. ... photo by Bobby Yip of Reuters shows the smog today in Hong Kong, which is set to host equestrian ...

  6. ...逆增的情況,污染物更難以擴散,在陽光的刺激下形成有毒的光化煙霧(photochemical smog ),輕則影響呼吸系統,嚴重的會致命。 光化學煙霧的特徵是棕灰色的煙霧...

  7. ... by industry and motor vehicles. Photochemical ozone and smog are created as nitrogen oxides and hydrocarbons react...

  8. ...多種化學物質如:焦油,尼古丁,一氧化碳等等有害物質. Dr.eye: The smog produced in smoking contains many kinds of chemical...