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在国内主要城市中,公交客车、营运客车等商用车的总量占有率虽然仅为8%左右,但排放的污染物却占到了整个城市汽车尾气排放总量的50%左右。可见,城市中以大型公交车为代表的商用车的尾气排放对城
In the major cities in China, although the total share of commercial buses such as buses and passenger trains is only about 8%, the pollutants emitted have accounted for about 50% of the total vehicle exhaust emissions in urban areas. Can be seen in the city to large buses as the representative of the commercial vehicle exhaust emissions to the city