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 ( ...
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...
There are consistent reports of electrical torture being practised on inmates.一直有报道称犯人被施以电刑。She's only 18 but she's already a practised composer.她才18岁，但已成了老练的作曲家。Silkworm culture is practised in order to get si...
She is not herself. She came near to a breakdown.她身体不舒服，简直要崩溃了。The organisers were given a breakdown of the costs.向组织者提供了一份开支细目。Ms Carey appeared to blame her breakdown on EMI's punishing work schedule.凯丽女士似乎将她的精神崩溃...