英语语法分析

The reaction proceeds at room temperature and the quality and yield of acetylate are comparison with ordinary method.

反应在常温下进行，乙酰化产物的产率和质量与原方法相当。

Study on the quantum chemical calculations is performed by means of MNDO method on VAX8350 computer for rubescensine A and its acetylate derivative.

本文用MNDO方法在VAX8350计算机上对冬凌草甲素及其乙酰衍生物进行了量子化学计算研究。