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为了减少汽车排放污染,世界各国都相继制定了控制汽车排放的各种法规,各国汽车制造厂采取了种种有效控制废气排放的净化技术,其中装配催化转化器已成为发达国家控制汽车排气污染的主要措施。
In order to reduce automobile emissions pollution, all countries in the world have successively formulated various laws and regulations for controlling automobile emissions. Various automobile manufacturers have adopted various purification technologies that effectively control the emission of exhaust gases. The assembly of catalytic converters has become a tool for controlling emission of automobile exhaust in developed countries Main measure