【摘要】 随着新的汽车排放标准的实施,仅靠改变发动机结构的方法来降低排放是远远不够了,应尽快制定适合新的汽车排放标准的燃油标准。更多还原

【Abstract】 As the following of the new standard of automobile exhaust,the method of changing engine is far away from the standard,we should make a new standard of automobile exhaust to fie the new vehi-cle type.更多还原