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美国环保局最近做出了一个新的规定,要求汽车制造商在新生产的汽车上必须安装大型滤毒器,以便减少碳氢化合物的排放量。汽车安装了大型滤毒器以后,可使有机挥发物(VOCs)的排放量减少许多。因为
The EPA recently made a new rule requiring carmakers to install large filter cartridges on newly produced vehicles to reduce hydrocarbon emissions. When cars are fitted with large filter cartridges, emissions of organic volatile compounds (VOCs) can be significantly reduced. because