查询词典 ethyl

We determined the relation of the temperature and the content of mesitylene to search the optimium operating condition, which assured the content and the yield of mesitylene high. After pre-treated, the raw material contained only the composition of mesitylene, o-ethyl-methylbenzene and 1,2,4-trimethylbenzene.

本文采用间歇精馏法进行预处理；通过测定馏出温度与组成关系曲线，确定最佳操作条件，以保证均三甲苯的含量及收率较高；预处理后的原料主要含均三甲苯、邻甲乙苯及偏三甲苯。

The jeopardy,mechanism,analysis method and elimination method of ethyl carbamate was summarized to enhance the social recognition of it as a carcinogen.

对氨基甲酸乙酯的危害、形成机制、分析和消除方法进行了综述，应加强对氨基甲酸乙酯这种致癌物质的认识，引起社会的关注。

In order to test the validity of this method, the saponification of methyl acetate, ethyl formate and methyl formate in aqueous solution at 25℃ has been studied.

研究了25℃下乙酸甲酯、甲酸乙酯和甲酸甲酯在水溶液中的皂化反应，其计算结果与文献值相吻合，从而验证了热弛豫法的正确性。

The mob ile phase is a mixture of methyl alcohol and ethyl acetate and water(40:20:40,v/ v).

对萃取条件和萃取百分率，色谱分离条件进行了研究，讨论了测定的灵敏度、选择性和重现性。

You know, there has been a debate about...ethyl versus methyl.

你知道，关于乙基对甲基有一些争论。

The company is committed to the wholesale, retail chemical products, including: industrial toluene, xylene, white oil methanol, ethyl, n-butyl, C ketone, butanone, anti-Whitewater, cyclohexanone, etc. methylal more than 40 kinds of products, the average monthly sales volume over 4000 tons.

本公司主要致力于批发，零售化工产品，包括：工业用甲苯，二甲苯，白电油甲醇，乙酯，丁酯，丙酮，丁酮，防白水，环已酮，甲缩醛等40多种产品，平均月销量达4000多吨。

In order to obtain the thermodynamic data of the synthesis of ethyl methyl carbonate from dimethyl carbonate and diethyl carbonate, the standard molar enthalpies of formation, Gibbs free energy and molar heat capacity under constant pressure are calculated by the method of Benson group contributions.

为了得到碳酸二甲酯和碳酸二乙酯酯交换合成碳酸甲乙酯反应的热力学数据，用Benson基团贡献法计算了相关物质的标准摩尔生成焓、吉布斯自由能和摩尔定压热容。

This company is always ready to provide acrylamide, morpholine, vinyl acetate, ethyl acetate, and etc. We will be your reliable associator with our honest serve.

我司常年提供丙烯酰胺、吗啉、四氢呋喃、醋酸乙烯、醋酸乙酯等化工产品，相信通过我们真诚的服务，一定能成为值得您信赖的合作伙伴。

The baseline separation of 9 neutral compounds (thiourea, benzene, toluene, ethyl benzene, n-propylbenzene, naphthalene, n-butylbenzene, fluorene and anthracene) and 7 acidic, basic and neutral compounds (thiourea, o-aminophenol, phenol, benzene, o-methylaniline,α-naphthylamine, 2,4-dichloroaniline) can be obtained under optimized capillary electrochromatographic conditions.

在该均相硅胶基质整体柱上成功地分离了9种中性物质(硫脲、苯、甲苯、乙基苯、正丙苯、萘、正丁基苯、芴和蒽)以及7种中性、酸性和碱性物质(硫脲、邻氨基酚、苯酚、苯、邻甲苯胺、α-萘胺和2，4-二氯苯胺)。

The product in this study has good result in synthesizing of N-ethyl-para-menthane-3-carboxamide, a neotype physio-algefacient.

把该方法制得的薄荷烷基氯，用于新型生理清凉剂N-乙基－对－薄荷烷－3-羧酰胺的合成实验，取得了良好效果。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。