英语语法分析

Pyridinium acetate;

吡啶醋酸盐；

The preparation of pure pyridinium dichromate is described.

三氧化铬与吡啶反应制备吡啶重铬酸盐。

We also researched the extraction-oxidation desulfurization with N-alkyl-pyridinium-based ionic liquids.

同时还研究了吡啶离子液体萃取-氧化汽油脱硫的情况。