This paper analyzes the glyceryl polyether by nuclear magnetic resonance ( NMR ) spectroscopy .用 核磁共振 分析了甘油聚醚.The preparation of catalysts , yield of glyceryl triacetate and and demerits the catalysts were introduced bri...
The preparation of catalysts , yield of glyceryl triacetate and and demerits the catalysts were introduced briefly.对上述催化剂制备、三醋酸甘油酯收率、催化剂优缺点作简要介绍.This paper analyzes the glyceryl polyether by nuclear magnetic resonance ( ...
布拉特巴克比媒体称赞的要有才华。Bratbakk had more ability than the media gave him credit for.艾丽斯从不缺席的记录真是值得称赞的.Alice's record of perfect attendance is very creditable to her.他的目的是高尚的,值得称赞的.His aim is honorable and praiseworthy....