The air pollution in the urban area is still serious. 城市大氣污染仍然較重。
The systemic research of toxic organic compounds and organic molecular tracers are significantly important for treatment and control of urban air pollution. 開(kāi)展有毒有害有機物及不同污染源有機示蹤化合物的系統研究,對城市大氣污染的治理具有重要的意義。