二甲苯对正常人外周血淋巴细胞SCE频率的影响_毕业论文_毕业论文范文 - 广东应届生毕业论文网 关键词］ 二甲苯类;淋巴细胞;姐妹染色单体交换 [gap=560]KEY WORDS］xylenes; lymphocyte; sister chromatid exchange
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N an aromatic hydrocarbon existing in three isomeric forms, all three being colourless flammable volatile liquids used as solvents and in the manufacture of synthetic resins, dyes, and insecticides; dimethylbenzene. Formula: C6H4(CH3)2 二甲苯 (Also called xylol)
Its isomerization is aimed at increasing the yields of para - and ortho - xylenes.
其异构化的目的是提高对二甲苯和邻二甲苯的收率。
Another important group of petrochemical raw materials are the aromatic compounds, principally benzene, toluene and xylenes, which are mainly produced by catalytic reforming.
另一组重要的石油化学品原料是芳香烃化合物，主要是苯、甲苯和二甲苯，主要由催化重整制得。
The recycle theory was introduced briefly in this article. Additionally, the application of this theory was shown with the example of separating para-xylene from mixed xylenes.
前言： 比较简明的介绍了再循环理论，并以对二甲苯分离为例示范其使用方法。
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