The main gaseous pollutants from automobile exhausts, nitrogen dioxides and carbon monoxide, are the major air pollutants in the city. 摘要氮氧化物和一氧化碳是汽車(chē)尾氣的主要氣態(tài)成分，也是城市空氣的主要污染物。
The rare-earth-zirconium composite oxides which have high thermal stability and high storage of oxygen are getting more and more attention in the automotive exhaust cleaning field. 摘要由于其良好的儲放氧能力和熱穩定性，以鈰為主的鈰鋯氧化物在汽車(chē)尾氣的處理中得到了越來(lái)越廣泛的應用。
