英语翻译oil gasoline produced by simple distillation of crude oi

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英语翻译
oil
gasoline produced by simple distillation of crude oil or via conversion processes such as thermal or catalytic cracking contains a large variety of undesirable impurities
,which are different both in quality and quantity depending on the manufacturing process applied.the quantity varies between a few to sone thousand of parts per million.,and their influence on the properties of the gasoline may be quiet dissimilar.Examples of such impurities which are found in gasoline fractions and in particular in catalytically cracked material are:

石油　　
汽油生产的简单蒸馏的原油或通过转换过程,如热或催化裂化包含各种各样的不良的杂质,这是不同的两个在质量和数量取决于应用的制造过程.数量有所不同,一些宋数千ppm.,他们对其性能的影响的汽油会安静的不同.这样的杂质产于汽油馏分,特别是在催化地破解了材料有:
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