例句與造句

1. It is a light fraction of petroleum . it can be used as solvent of insecticide aerosol , medicine and dyeing
   本產(chǎn)品為由石油的輕質(zhì)餾分，經(jīng)深度加氫精制所制得的hr - 92殺蟲氣霧劑用油。
2. However , the majority of crude oils , and this applies to the heavier , more viscous petroleums , which are processed by distillation , are usually separated into the lighter fractions ( gas , gasoline , naphtha , kerosene , and gas oil ) and the bottom or , as it is more generally called , the reduced crude
   但是，經(jīng)過蒸餾處理的大多數(shù)原油，包括比重較大、粘度更大的原油，一般都分離為較輕組分(氣、汽油、粗汽油、煤油和粗柴油)和殘?jiān)蛘吒喾Q作常壓重油。
3. It's difficult to find light fraction in a sentence. 用light fraction造句挺難的