查询词典 aldehyde resin

The results indicated that the use of such membrane could achieve satisfactory separation effects (condensate of high alcoholicity and rich flavoring substances was obtained, membrane-flowing rate: ethanol＞esters except ethyl lactate＞aldehyde＞other alcohol＞water), the membrane had good selectivity to ethanol and ethyl caproate had good membrane-flowing rate and membrane-passing percentage, however, ethyl lactate, aldehyde and methanol had poor mambrane-passing percentage with heavy loss during membrane-passing.

结果表明，渗透汽化膜有良好的分离性能，可得到高酒精度、香味物质富集的冷凝液；过膜速率：乙醇＞酯类＞醛类＞其他醇类＞水；膜对乙醇选择性好，己酸乙酯的过膜率及过膜速率高；乳酸乙酯、醛类及甲醇过膜率较小、损失量较大；渗透汽化膜用于白酒的香气成分分离有良好的工业应用前景。

Monosaccharides are classified according to (1) the number of carbon atoms present in the molecule and (2) whether they contain an aldehyde or keto group, thus a monosaccharide containing six carbon atoms is called hexose; a monosaccharide containing an aldehyde group is called aldose; and one containing a keto is called a ketose.

单糖的分类按照（1）分子中碳原子的数目（2）是否含有一个醛基或酮基，因此一个单糖含有6个碳原子叫做己糖；一个单糖含有醛基叫醛糖；含有酮基叫酮糖。

With ester- 27 in hand, the vinyl group was next converted to the aldehyde moiety via ozonolysis, employing reduction of the ozonide with dimethylsulfide or PPh 3 , followed by treatment with DBU in THF to effect epimerization; aldehyde- 29 was produced in a combined yield of 65% for the two steps.

同酯-27手，下一组黑胶转为经醛啉臭氧、用人的臭氧减少与甲基或产后大出血3、治疗后，在指定四氢呋喃对异构；醛类-29年联合摄制产量65%的两步。

Main production and management projects: piperonyl butoxide, Piperonal aldehyde, C Piperonyl aldehyde, PMK, eucalyptus oil, according to pituitrin, citral, ionone, cubeba oil, Geranium oil, 99 % natural a bit terpineol, pine oil acetate, sassafras oil, natural spices; run: Fragrance, tobacco flavor, food flavor, natural flavor essence seasoning products.

胡椒基丁醚、洋茉莉醛、胡椒基丙醛、胡椒基甲基酮、桉叶油、按叶素、柠檬醛、紫罗兰酮、山苍子油、香叶油、99%天然甲位松油醇、乙酸松油脂、黄樟油等天然香料；兼营：日化香精、烟用香精、食用香精、调味品香精等天然香精产品等。

The item will establish a set of producing propyl- aldehyde 20 thousand t/y and its backwards' process using the advanced technology above. The main productions are propyl- aldehyde, propyl- alcohol propyl-ache, and etc..

本项目拟建设一套2万吨/年丙醛生产装置及其下游产品加工装置，采用国内研制开发的以催化稀乙烯和合成气为原料的羰基合成工艺，主要产品有：丙醛、丙醇、丙酸、丙酸钙、丙酸钠和丙酸胺等。

A new, stereo-controlled method of aldehyde group synthesis is summarized, which is used to synthesize aldehyde group by introducing thiazole ring and has a wide appreciation for bio-activated compounds synthesis.

摘要本文综述了一种新型可立体控制的醛基合成方法––利用唑环引入醛基的方法以及它在具有生物活性物质合成中的应用。

The general method and microwave radiation Veratrum aldehyde synthesis comparison Abstract: Objective To investigate the synthesis methods Veratrum aldehyde and to study the synthesis of microwave radiation of the advantages and disadvantages of this new approach, to provide guidance for the production of meaning.

化学合成毕业设计翻译求解急！！用普通方法和微波辐射法合成藜芦醛的比较摘要：目的考察合成藜芦醛的方法，并研究微波辐射合成这种新方法的优缺点，为生产提供指导意义。

Veratrum aldehyde synthesis of many drugs intermediates, methyl aldehyde method for raw materials in Champlain, after dimethyl sulfate methylation available to 20% sodium hydroxide as the solvent, 10-11 in the PH value of the under the conditions of synthesis; microwave irradiation is the use of microwave radiation heating to replace the traditional approach to synthesis of a product of methylation reactions, this method does not require solvents, and less by-products, but still need to use 15% sodium hydroxide to adjust pH.

藜芦醛是许多药物合成的中间体，甲基化法以香兰醛为原料，经过硫酸二甲酯甲基化可得，以20%氢氧化钠为溶剂，在PH值为10-11的条件下合成；微波辐射法是利用微波辐射代替传统加热方式进行甲基化反应合成产物，这种方法不需要溶剂，并且副产物少，但仍需要用15%氢氧化钠来调节酸碱度。

When caprylic aldehyde content was at the range of 0～4%,the water vapor permeability of the modified wheat protein cross-linked with formaldehyde increased. When the caprylic aldehyde content increased,the water vapor permeability decreased because of the chemical modification.

辛醛含量在0～4％范围增加时，甲醛交联的改性蛋白质塑料的透湿性增强；当辛醛含量继续增加，透湿率有一定程度的下降。

After analyzing the reaction mechanism through literature, we think the reaction from diethanolamine to iminodiatic salt is composed of two steps—reaction from alcohol to aldehyde and the disproportionation reaction of the aldehyde. The selectivity, conversion, rate of this reaction are mainly attributed to the capability of this catalyst.

通过查阅文献资料，分析了反应机理，认为二乙醇胺脱氢生成酸是由两步反应组成─醇脱氢生成醛与醛的歧化，催化剂的性能是影响反应转化率、选择性及反应速度的主要因素，确定了采用沉淀法制备Cu/ZrO2做催化剂。

You can buy sweetened beverages, if that suits you.

你若喜欢的话，可以买些含有糖精的混合饮料。

As many of you are probably aware, Nick and Vanessa were recently faced with an embarrasing sex scandal after naked pictures of the two getting jiggy with it in a hot tub surfaced the net.

正如很多你可能知道，尼克和 Vanessa 最近面临一个尴尬的绯闻事件后，赤裸裸的图片两个越来越jiggy与它在浴缸中的一个热点浮现净。