英汉词典

1.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。

2.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。

3.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。

4.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。