查询词典 ethyl acetate

This solution is then treated with either methylene chloride or ethyl acetate, which bonds with the caffeine.

这个解决方案，然后处理或者二氯甲烷或乙酸乙酯，这些债券咖啡因。

It is insolvable in water , and soluble in alcohol , ethyl acetate or benzene

本产品为类白色固体，产品不溶于水，可以溶于酒精、乙酸乙酯或苯。

The kinetics of catalytic synthesis of ethyl acetate using cation exchange membrane catalyst was studied.

摘 要：研究了以阳离子交换树脂为催化剂合成乙酸乙酯的动力学。

The results show that these derivatives can be obtained in the yield of over 90％ in the presence of DMF when using ethyl acetate as a catalyst.

结果表明，以N，N-二甲基甲酰胺为溶剂，以乙酸乙酯为催化剂的合成路线，均可以以90％以上的得率合成出上述化合物。

The calculated IC times of chl-a in ethyl acetate, tetrahydrofuran and dimethyl formamide are 141, 147, and 241 fs, respectively.

计算得到的叶绿素a分子在乙酸乙酯、四氢呋喃和二甲基甲酰胺溶剂中的内转换时间分别是141、147和241 fs。

AIM To investigate the therapeutic effect of ethyl acetate extract from Pongamia pinnata roots on ethanol-induced gastric lesions.

目的研究水黄皮根乙酸乙酯萃取物对乙醇致胃黏膜损伤的治疗作用。

The catalyst shows good activity for the oxidation of toluene, acetone and ethyl acetate.

研究了阳极氧化的电流密度和电解液种类等因素对阳极氧化膜形成的影响，以及还原时间和焙烧温度对催化剂氧化活性的影响。

Make solutions of 4:1, 1:1, and 1:4 ratios of hexane:ethyl acetate.

配制一个4：1，1：1和1：4的己烷：乙酸乙酯的溶液。

Then the solution is heated to the temperature at which the caffeine and either methylene chloride or ethyl acetate compounds evaporate.

那么，解决办法是加热温度的咖啡因，或是二氯甲烷或乙酸乙酯化合物蒸发。

European or Traditional Process - Direct Method: The direct process involves softening the beans by steam first, then washing them for about 10 hours with either a methylene chloride or ethyl acetate solution to absorb the caffeine from the bean.

欧洲或传统工艺-直接方法：直接过程涉及软化咖啡豆的蒸汽，然后洗涤他们大约10小时带有二氯甲烷或乙酸乙酯溶液吸收咖啡因的咖啡豆。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。