Straight-run gasoline and coker gasoline are poor quality gasolines with low octane numbers.

直馏汽油和焦化汽油属于辛烷值较低的低品值汽油。

Infrared spectroscopy is an effective method for analyzing ether and alcohol compounds in gasolines and its analytical results can be used for indentifying the kinds of gasolines.

红外光谱是分析汽油中醚类和醇类化合物的有效手段，并能根据分析结果对汽油进行种类识别。

Other products, for example, gasolines, aromatic solvents, and even some asphalts , are totally or partly synthetic.

其它石油产品，如汽油、芳烃溶剂甚至包括有些沥青，则是通过完全或部分合成而制造的。

This paper proposes using dielectric spectroscopy to identify gasolines added with oxygenated compounds and the new method has achieved same effect as infrared spectroscopy.

本文提出采用介电谱技术对加有不同含氧化合物的汽油进行识别，获得了与红外光谱相一致的结果。

The effects of gasoline sulfur and olefin content on vehicle exhaust emissions were investigated through a fleet of 5 vehicles tested with 8 different gasolines.

通过5辆车组成的车队在各种指标不同的8种燃油上进行尾气排放试验，研究了汽油中硫含量和烯烃体积含量的变化对汽车尾气排放的影响。