这些分子燃烧起来比汽油更干净，部分原因是它们的碳-碳键更少（如果有的话），而且它们排放的碳氢化合物不太可能产生臭氧。
These molecules burn more cleanly than gasoline, in part because they have fewer, if any, carbon-carbon bonds, and the hydrocarbons they do emit are less likely to generate ozone.
本文作者采用稀释通道、热重分析仪，测量了S195柴油机微粒排放的质量浓度，对微粒中的碳和碳氢化合物两种组分进行了分析。
The authors measured the mass concentration and chemical components of the particulates exhausted from a S195 diesel engine by using dilution tunnel and thermogravimetric analyzer.
到1998年，碳氢化合物的释放必须在原来的标准上再下降30%，同时氮氧化物的排放再下降60%。
By 1998, hydrocarbon emissions will have to be cut 30% below the Prior standard, while nitrogen oxides must be cut 60%.
到1998年，碳氢化合物的释放必须在原来的标准上再下降30%，同时氮氧化物的排放再下降60%。好评(0)。
By 1998, hydrocarbon emissions will have to be cut 30% below the prior standard, while nitrogen oxides must be cut 60%.
在汽油机的一个测试循环中，约占排放污染物总量70%～80%的非甲烷碳氢化合物是在汽油机冷起动阶段没有经催化转化而直接排入大气中，造成严重污染。
In a testing of petrolic engine, about 70% to 80% of nonmethane hydrocarbon is emitted into atmosphere without catalysis conversion in theoment of coldstart, so that serious pollution is produced.
污泥中的碳氢化合物回收率达到94.5％，回收油可以达到回炼要求，污水达到排放污水处理场要求，污泥量减至原来的12.2％。
The discharged water met the requirement of the wastewater treatment plant, and the remained sludge was reduced to 12. 2% of the original.
污泥中的碳氢化合物回收率达到94.5％，回收油可以达到回炼要求，污水达到排放污水处理场要求，污泥量减至原来的12.2％。
The discharged water met the requirement of the wastewater treatment plant, and the remained sludge was reduced to 12. 2% of the original.
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