Lowering gasoline aromatics content reduced HC and co emission, but olefin reduction had a adverse effect on HC and co emission.
汽油中芳烃含量降低，排放的CO、HC降低；烯烃含量降低，对CO、HC排放有负面影响。
Lowering gasoline aromatics content reduced HC and co emission, but olefin reduction had a adverse effect on HC and co emission.
汽油中芳烃含量降低，排放的CO、HC降低；烯烃含量降低，对CO、HC排放有负面影响。
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