It provides one kind of cigarettes dopes that can reduce the harmful ingredient in the combustion process.
是提供一种能够减少卷烟在燃烧过程中产生有害成分的卷烟涂料。
The close-loop EGI system with threeway catalyst has been verified efficiently to reduce the harmful ingredient in exhaust gas of car.
在汽车中应用带有三元催化剂的闭环电喷系统可以有效降低汽车尾气中的有害成分。
Presently, catalytic converter is the most effective equipment to emission control, which can reduce harmful ingredient of automobile emission.
催化转化器能减少汽车排放物中的有害成分，是目前最有效的汽车排放控制装备。
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