查询词典 ethyl

The effects of reactant ratio, catalyst amount, reaction time and temperature on the yield of p-nitro-ethyl benzoate were discussed.

以硫酸氢钾为催化剂，合成对硝基苯甲酸乙酯，并对影响产率的诸因素进行了考察。

P-Nitro-ethyl benzoate was synthesized with potassium bisulfate as catalyst for the first time.

以硫酸氢钾为催化剂，合成对硝基苯甲酸乙酯，并对影响产率的诸因素进行了考察。

In the precence of the base catalyst KF/Al2O3, the one - pot reaction of 2 -hydroxybenzaldehyde or 2 - hydroxynaphthaldehyde with ethyl α- bromoacetate,α-bromoacetophenone , 1,4 - dichloromethylbenzene , 4,4'- dichloromethylbiphenyl and 1,5 -dichloromethylnaphthalene gave the benzofuran compounds in 38-89% yield.

本文报道用 KF/Al_2O_3作为碱催化剂，由水杨醛或2-羟基-1-萘醛分别和α-溴代乙酸酯、α-溴代苯乙酮、苄基氯、4，4'-二氯甲基联苯和1，5-二氯甲基萘等进行一锅化缩合反应，以38～89％的产率合成了14种芳并呋喃化合物。

Among 3 cultivars, B17 occupied the least green odor contents of aromatic constituents, such as 2-hexen-1-ol acetate, butanoic acid 3-hexenyl ester and butanoic acid 3-hexenyl ester, hut had the most fruity, flowery and woody odors such as β-Ionone, 1-nonanol, Acetic acid octyl ester, Methyl benzoate, Ethyl benzoate and theaspirane, which showed that B 17 was superior to the 2 other cultivars in aroma quality.

不同品种的杨桃果实中的所含的香气成分及含量不同，B17杨桃含乙酸－反－2-己烯酯、丁酸－反－2-己烯酯、丁酸－反－3-己烯酯等青香型酯类最低而含β-紫罗兰酮、1-壬醇、乙酸辛酯苯甲酸甲酯、苯甲酸乙酯、茶螺烷等花香型、果香型及木香型成分最高，因而其香气品质要优于B10和新加坡红肉种。

Principal cmponent analysis was used for 34 aroma components,and the relsult showed that the 34 aroma components could be represented asssumably by butanoic acid methylester, butanoic acid ethylester, propylalcohol, butylalcohol, 2,3-butanediol, decanoic acid ethylester, ethyl 4-hydroxybutanoate, eugenol, palmitic acid ethylester, 9-Octadeceroic acid ethylester.

对定量的34种香气物质进行主成分分析，结果表明：由丁酸甲酯，丁酸乙酯，丙醇，丁醇，2，3-丁二醇，癸酸乙酯，4-羟基丁酸乙酯，丁子香酚，棕榈酸乙酯，油酸乙酯基本可以代表本试验所定量出的34种香气物质呈现出的香气物质所构成的风味特征。

Methods: Based on national standard, detected n-hexane, benzene, toluene, dimethylbenzene, ethyl acetate, butyl acetate and butanone in 450 factories.

根据中华人民共和国国家标准，对昆山市的450家接触正己烷、苯、甲苯、二甲苯、乙酸乙酯、乙酸丁酯、丁酮7种有机物的企业车间空气进行采样检测。

Outlined solvents like, butanone ethyl acetate, acetone, methybenzene ethanol are quick drying solvents.

以上列举的溶剂中象醋酸乙酯、丁酮、丙酮、甲苯、乙醇都属快干溶剂。

After the clean version with ethyl mixtrue: such as: aminomethylbenzoic (8: 2), ethhyl: aminomethylbenzoic: ketone (7: 2: 1) in respect of problem-solving abilities, but here's a question is: If you use ethhyl, aminomethylbenzoic can be solved, it is best not butanone, because ketone residues of odoural a stronger, it may be on the cards and membership cards the quality of the production.

把版洗肮脏后用混分溶剂：如乙酯：甲苯（8：2）、乙酯：甲苯：丁酮（7：2：1）不离灵验不天处置题纲，但这里给夺纲的一个题纲是：如果用乙酯、甲苯能处置时，最坏务必丁酮，因为丁酮的残留气息较淡，不定差制卡和会员卡制息品的质度有感化。

This product and PVC and ethylene vinyl acetate copolymer has good histocompatibility, but also acrylic and poly methyl methacrylate, polyvinyl butyral, nitro cellulose, ethyl butyl acetate fibers and cellulose, such as miscibility.

本品与聚氯乙烯和乙烯醋酸乙烯共聚物有良好的相溶性，还和聚甲基丙稀酸甲酯、聚乙烯醇缩丁醛、硝基纤维素、醋酸丁酯纤维和乙基纤维素等相溶。

Glauca which isolated by using solvent: camphene, 3, 6, 6-trimethyl-2-norpinene and capric acid, ethyl ester

山胡椒果油：正癸酸、大根香叶烯A、月桂酸等；莰烯、3，6，6-三甲基-2-降蒎烯、癸酸乙酯等

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。