乙酸

Any of several esters, other than the ethyl ester, of carbamic acid .

三甲基氨酸： TMG 可以在胍基乙酸形成肌酸的过程中提供甲基基团（CH3）。。。。

Sodium diethyl oxalacetate ; \ Claisen condensation ; \ 1 phenyl 3 carbethoxy 5 pyrazolone

钠代草酰乙酸乙酯； Claisen酯缩合； 1苯基3羧酸乙酯5吡唑啉酮

The main results are as the following: 1. Different reagents are used to modify the 568nm-emission QDs and there influences on the optical qualities of QDs are discussed. A good method of modification by which the excellent optical qualities of QDs are kept is found. 2. The water-soluble QDs were linked to the antibodies using the coupling reagents ethyl-3- carbodiimide and N-hydroxysuccinimide.

具体包括的内容如下： 1讨论了不同修饰剂及它们的组合对量子点表面进行修饰后，量子点光学性质的影响，发现对于最大激发波长为568 nm的量子点，应用巯基十一酸与巯基乙酸钠组合对其修饰后，得到的水溶性量子点保持了脂溶性量子点的优良光学性质，其量子点产率相对于其他修饰剂或组合也比较高。

The results show that the decay of retinol and retinyl acetate are much faster in anionic micelles than that in cationic micelles and neutral micelles(TX-100), which indicate that the decay is carried out by the protonation of retinol or retinyl acetate first, then one molecular water or acetic acid is lost to produce the carbonium ion, which release the proton followed to generate the anhydroretinol.

数据显示，维生素A及其乙酸酯在阴离子胶束溶液SDS中的衰变速度要远大于在阳离子胶束溶液CTAB和中性胶束溶液TX-100中的衰变速度。

In this paper, five oxygenic terpenoids —Carveol (C10H160),Carvone (C10H140),Menthone (C10H180),Carvyl acetate (C12H1802) andCedrol (C15H260) were used as test compounds and barnyardgrass( Enchinochloa crusgalli L.) receptor in rotational regression design experiment.

以5种含氧萜类物质香芹醇、香芹酮、薄荷酮、香芹基乙酸酯和雪松醇为化感物质替代物，以稗草为受体，运用正交旋转回归组合实验，分析物质间的互作效应。

The main chemical constituents of the essential oil of peppermint are identical,which is 1-menthone,1-menthol, menthlacetate, menthofuan,α-pinene,β-pinene, limonene, 1, 8-cineole, 3-octanol, isomenthone, pulegone, neomenthol, caryophyllene, sabinenehydrate, germacrene-D, piperitol, viridiflorol,isomenthone, and others;but their contents are different,hence the aroma quality among the essential oil is greatly different.

它们的主要组成成分相同，均为薄荷酮、薄荷呋喃、乙酸薄荷酯、薄荷醇、α-蒎烯、β-蒎烯、苧烯、1、8-桉叶油素、3-辛醇、水烩烯、异薄荷酮、新薄荷醇、石竹烯、胡薄荷酮、大根香叶烯、胡椒醇、绿花醇等，但其含量有较大的差别，从而使精油香气品质产生了很大的差异。

However, the quality of the copper film deposited by this method is poor. In order to resolve this problem, we study the influence of some additives on two different kinds of electroless copper plating which using sodium hypophosphite as reducing agent and sodium citrate as chelating agent, sodium citrate and ethylene diamine tetraacetic acid disodium salt (EDTA·2Na). Electrochemical methods were used to test the anodic and cathodal polarization processes which can explain the mechanism of the influence of additives.

然而该体系所得的铜膜质量较差，为此我们研究了以次磷酸钠为还原剂，分别以柠檬酸钠为单一络合剂，柠檬酸钠和乙二胺四乙酸二钠为双络合剂体系中，研究了几种添加剂对化学镀铜的影响，并通过电化学方法研究了各种添加剂对化学镀铜沉积电位的影响。

F. which belongs to the Celastraceae Tripterygium plant, its extraction acetylacetic ester was used in clinic preparation, the primary component is epoxy terpenoid lactone.

为卫矛科雷公藤属植物，临床制剂使用的是雷公藤根的乙酸乙酯提取物，主要成分为环氧二萜内酯类化合物。

A method for synthesis of isobutyl acetate based on ceric sulfate as catalyst was developed.

以冰醋酸、异丁醇为原料，硫酸高铈为催化剂合成乙酸异丁酯。

The catalyst prepared by impregnating SBA-15 in solution of 0.1 mol/L ceric sulfate and being calcined at 300℃ for 3h showed best catalytic activity in synthesis of n-butyl acetate.

用0.1 mol/L的硫酸高铈浸渍SBA-15，焙烧温度为300℃，焙烧时间3h，通过乙酸正丁酯的合成反应考察催化剂Ce-SBA-15的制备，酯化率为95.7%。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐