petroleum benzine造句
造句与例句
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- The TSCA Definition 2008 describes petroleum benzine as " a complex combination of hydrocarbons obtained by treating a petroleum fraction with hydrogen in the presence of a catalyst.
- According to their corresponding MSDS, most commercially offered petroleum benzine solvents consist of parrafins ( alkanes ) with chain lengths of C5 to C9 ( " i . e . " n-nonane and their isomers ), cycloparaffins ( cyclopentane, cyclohexane, ethylcyclopentane, etc . ) and aromatic hydrocarbons ( benzene, toluene, xylene, etc . ).
- It's difficult to see petroleum benzine in a sentence. 用petroleum benzine造句挺难的
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