国外的汽车排放法规

摘要

全面介绍了以美国、欧洲和日本为代表的三大汽车排放法规体系，并阐述了这三大排放法规体系各自的产生背景、演变历程及发展趋势。%A comprehensive introduction of the three main automobileemission regulation systems as representative of American、Europe and Japan and their background、evolution and developing trends are given.