From analysis of emission factors of vehicles in many cities,emission factors of various kinds of vehicles in Jinan are defined by the methods of the arithmetical average and weights average in Jinan.

• 对机动车典型排放因子进行分散分析,并引用各地的典型因子,采取算术平均和加权平均的方法来确定济南市的各类机动车的排放因子。