查询词典 acetic aldehyde

Optimal process conditions for preparing 2-oxo-1, 4-piperazine diacetic acid(3-KP): 2-oxo-1-piperazine acetic acid was combined with chloroacetic acid at a mole ratio of 1 to 1.1, at temperature 40℃for 8 hours.

通过单因素分析，合成3-KP 的最佳反应条件为：反应温度为40℃，反应时间为8 小时，氯乙酸∶S-KP 的摩尔比为1.1∶1。

DCA, or dichloroacetic acid, is an analogue of acetic acid in which chlorine atoms replace two of the three hydrogen atoms on the methyl group.

DCA也叫二氯乙酸或二氯醋酸，是一种类似乙酸的化合物，但乙基团上有两个氢原子被氯原子所取代。

In consideration of the competition of reactions between acetic acid, chloroacetic acid, dichloroacetic acid andchlorine, a competition factor was introduced for the improvement of fitting accuracy between calculated and experimental value of concentration.

结果表明，加入&竞争因子&的平行-连串宏观动力学模型能准确地反映己酸光氯化合成三氯乙酸的反应动力学规律。

And the epoxy acrylic cationic resin applicable to cathodic electrodeposition coating was synthesized by using aminating agent of diethanolamine and neutralizing agent of acetic acid.

并以二乙醇胺为胺化剂、冰醋酸为中和剂合成了可用于阴极电沉积涂料的环氧丙烯酸阳离子树脂。

Its main products include:ZOLEDRONIC ACID, ADAPALENE, SIMDAX, VORICONAZOLE, J ACID UREA, J ACID UREA SODIUM SALT, 1,7-CLEVE'S ACID, 1,6-CLEVE'S ACID, 1,5- DINAPHTHYL ISOCYANATE, 5- INROINDOLE,----2-METHOXYIMINO-2-（FURYL-2-YL）ACETIC ACID AMMONIUM SALTand etc.

部分产品远销美国、德国、英国、印度、日本等十几个国家和地区，主要产品有：唑来磷酸、阿达帕林、左西孟旦、伏立康唑、猩红酸、猩红酸钠盐、双介酸、1，7克力夫酸1，6克力夫酸、1，5-萘二异氰酸酯、5-硝基吲哚、甲氧亚胺基呋喃乙酸铵等。

objectiveto determine the content of the tritepenoidic acid in dracocephalum moldavica l .methodswith oleanolic acid as the standard,5% vanillin-acetic acid and perchloric as the developer,colorimetric method was applied.

目的测定香青兰全草中总三萜酸成分含量。方法以齐墩果酸为指标，采用香草醛-冰醋酸及高氯酸显色后用分光光度法测其含量。

The paper studies mainly the separation and recovery of low -concentration sodium sulfate - acetic acid-water system in the laboratory and probes into how varied factors affect the electrodialyzer' s limited electricity current density and in separating process performance.

本课题在实验室范围内，对低浓度硫酸钠—乙酸—水物系电渗析分离过程进行了研究，并就各种因素对电渗析器的极限电流密度和分离过程性能的影响进行了探讨。

Methods 30 samples were treated with 6-amino acetic acid to decrease encephalic pressure and normal cure as a control.

方法对照组30例，入院后给予6-氨基已酸等抗纤溶药降低颅内压力及一般对症治疗。

A spectrophotometric simultaneous determination of glutaraldehyde and ethanal based on the reaction between gluaradehyde or ethanal and thiobarbituric acid in acetic acid solution is described.

在醋酸介质中，硫代巴比妥酸与戊二醛及乙醛分别可生成2∶1及1∶1的缩合产物，这两种缩合产物在可见光区具有不同波长的最大吸收，籍此可同时测定戊二醛及乙醛。

When methoxyethanol was used as the solvent,tantalum ethoxide can be chemically modified with acetic acid to producetantalum alkxo-acylate precursor, and therefore the hydrolysis of 〓can be slowed down.

在以乙二醇单甲醚为溶剂时，乙醇钽与醋酸作用生成乙醇钽的乙酰基配位化合物，可以减弱水解反应的进行。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。