乙酸

It is easily soluble in water, acetone and alcohol, slightly soluble in ether, ethyl acetate, chloroform, and pyridine, unsoluble in benzene.

熔点151℃～154℃。易溶于水、丙酮与醇，微溶于醚、乙酸乙酯、氯仿和吡啶，不溶于苯。

Various fractions of tannins with different polarities and relatively narrow molecular weight distribution were obtained by extractions using ether and ethyl acetate sequently.

通过乙醚和乙酸乙酯萃取可得到极性不同的组分。分析表明，各级分的分子量分布范围不同，且相对较窄。

Thus, 3 mol of Ethyl acetoacetate were treated with 2 mol of formaldehyde to yield 80% of I.

用2摩尔的甲醛处理3摩尔的乙酰乙酸乙酯可得到80%的I。

According to the thermal analysis, the thermal stability were greatly improved than the europium complex.

热分析结果表明当铕萘乙酸配合物掺入后热稳定性得到提高。

The catalysts for the combustion of ethyl acetat ewer eprepared using Fe,Co,Cu,Cr,and Mn metal oxides as active components supported on Al2O3-Ce0.5Zr0.5O2 mixed oxides and characterized by X-ray diffraction,temperature programmed reduction,oxygen storage capacity measurement,BET surface area,XPS measurement,and activity test.

制备了Fe，Co，Cu，Cr和Mn金属氧化物催化剂，所用载体为Al2O3-Ce0.5Zr0.5O2复合氧化物。利用X射线衍射，程序升温还原，储氧量测试，BET比表面测试和光电子能谱表征了催化剂。并利用活性测试表征了各种催化剂对乙酸乙酯催化燃烧能力。

The paper introduces method and step of determination formic acid and acetic acid in exhaust gas by ion chromatography.

阐述了离子色谱法测定废气中甲酸、乙酸含量的方法和步聚。

Influence of different carbon substrates （acetate, glucose, peptone and fecula） on the formation and characteristics of aerobic granules in Sequencing Batch Reactor is studied.

研究了不同的碳源基质（乙酸钠、葡萄糖、蛋白胨、淀粉）对序批式活性污泥法反应器中形成的好氧颗粒污泥的外观形态和特性的影响。

Influence of different carbon substrates(acetate,glucose,peptone and fecula) on the formation and characteristics of aerobic granule s in Sequencing Batch Reactor is studied.

研究了不同的碳源基质(乙酸钠、葡萄糖、蛋白胨、淀粉)对序批式活性污泥法反应器中形成的好氧颗粒污泥的外观形态和特性的影响。

Vitamin A and its derivatives are important medicine as well feedstuff, in which VA acetate is the most important.

维生素A及其衍生物是一类重要的药品和饲料添加剂，最常用的维A衍生物是其乙酸酯。

Potassium ferricyanide and dithiothreitol were used to control redox potential from －100 mV to －450 mV in 3 L fermenter.

在3 L发酵罐上利用铁氰化钾和二硫苏糖醇调节发酵体系氧化还原电位值在－100～－450 mV，结果表明－350 mV为菌体生长和产丁二酸的最佳电位，丁二酸生产速率由0.75 g/提高到1.18 g/，产物丁二酸与副产物乙酸的质量浓度比由2.5提高到3.9。

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。