narrow cut petroleum fractions

例句：

1. 1. Thenarrow cut petroleum fractions areused in the production of lubricants.
   窄馏分石油产品用于生产润滑油。
2. 2. The narrow cut petroleum fractions have a higher octanerating than regular gasoline.
   窄馏分石油产品的辛烷值比普通汽油高。
3. 3. The narrow cut petroleumfractions are more expensive to produce andtransport than their wider counterparts.
   窄馏分石油产品在生产过程中和运输过程中的成本都比宽馏分石油产品高。