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柴油机尾气中含有大量有害成分，主要为CO、各种碳氢化合物HC、氮氧化合物NOX（NO与NO2）等。此外，还有各种颗粒（如碳烟、油雾、润滑油和油料添加剂粒子）和少量硫化物。这些有害成分不仅污染环境，而且严重危害人体健康，特别是碳烟颗粒表面常附着SO2及其它一些致癌物质，因
Diesel exhaust contains a large number of harmful components, mainly CO, various hydrocarbons HC, nitrogen oxides NOX (NO and NO2) and so on. In addition, there are a variety of particles (such as soot, oil mist, lubricating oil and fuel additive particles) and a small amount of sulfide. These harmful ingredients not only pollute the environment, but also seriously endanger human health, especially soot particles often attached to the surface of SO2 and other carcinogenic substances, due to