查询词典 acetic acid

Acetic acid and Ethyl acetate are produced by Yangtze River Acetyl Cooperation Limited,ajoint venture of BPand Sinopec.Their production volume,Quality and technology are in first class in China and keep equal position in the world.

公司代理的醋酸和醋酸乙酯产品，是由中国石化和英国BP公司在重庆的合资企业-扬子江乙酰化工有限公司生产，其产量，质量和技术水平均居国内领先，与国际先进水平同步；公司双氧水的供应商是法国ATOFINA在上海的合资厂和中成化工，他们是中国目前最大和最好双氧水生产基地。

For decreasing the quantity of the organic solvent and saving the environment, this paper is focused on the preparation of stable TiO2 sol by using titanium alkoxide as precursor and water as solvent while adding acetic acid for the purpose of moderating the rate of hydrolysis.

溶胶-凝胶处理可以在织物的表面形成复杂的氧化物网络结构，这层凝胶固着在织物的表面，改表纤维的表面化学性能，赋予织物一定的功能性。

2 Condensation of ketones with ethyl cyanoacetate catalysed by ammonium acetate-acetic acid results ethyl alkylidene cL-cyanoacetate in 3 l?.-89% yield under ultrasound irradiation at 4l-450C within

在超声波作用下，以芳香醛和丙二酸为原料，以膨胀石墨作催化剂，合成多种肉桂酸，于41～43℃反应3.5-10小时，产率65-97％。

Compound 2 had allochroic processes in polar solvents such as methanol or DMF. Acids or alkali such as acetic acid or NaOC_2H_5 also showed apparent influence on the allochroic process.

并对化合物2的变色过程进行了研究，发现该化合物对极性溶剂如甲醇、N，N-二甲基甲酰胺和酸或碱如乙酸、乙醇钠等具有良好的变色过程。

The results show that the samples exposed to the air previously for 24 h can be passivated automatically in acetic acid solution with Cl- with the corrosion potential remaining 100mV.No such phenomenon was observed for samples which were cathodically polarized with the corrosion potential stabilizing at a value of -242±3mv. The passive film formed by anodically polarizing is more proof than formed in the air.

研究还发现：在空气中放置24小时后的试样在Cl-醋酸溶液中能自钝化，自腐蚀电位为100mv；经阴极极化后的试样在Cl-醋酸溶液中不能自钝化，其自腐蚀电位为-242±3mv；经阳极极化形成的钝化膜比在空气中自然形成的钝化膜更致密。

3Ml blood of antecubital vein from patients with CCF were collected at admission, and 3ml blood of antecubital vein from healthy individuals on an empty stomach in early morning. Added Na2-ethylenediaminetetra-acetic acid to the samples of whole blood, separated plasma by prompt centrifugation of the blood samples at 2500g at 4°C for 10 minutes . The samples were immediately frozen and stored at -80°C.

选择91例心力衰竭患者和26例健康体查者作为研究对象，心力衰竭患者入院后立即抽取肘静脉血液3ml，收集对照者清晨空腹肘静脉血液3ml，EDTA-Na2抗凝，4℃下以2500转/分高速台式离心机离心10分钟后分离血浆，分装保存于-80℃冰箱待测。

Apertured TiO2 microtubes have been fabricated by simple hydrolysis of titanium tetrachloride using ammonia in the presence of glacial acetic acid.

在冰乙酸存在条件下，以四氯化钛水解法制备了具有锐钛矿晶型结构的二氧化钛多孔微管，并用化学沉积法对其进行修饰，得到银修饰的二氧化钛多孔微管。

Objective: To observe the effect of Weixikang apozema on growth factor of acetic acid gastric ulcer rats.

目的：观察胃喜康煎剂对乙酸致胃溃疡大鼠细胞生长因子的影响。

The acetic acid is refined by vacuum distillation and azeotropic distillation.

以醋酸的精制可利用减压精馏蒸出和共沸精馏脱水来实现。

The distillation of acetic acid,water and butyl acetate system was a gas-liquid-liquid three phase azeotropic distillation process.

醋酸/水体系相对挥发度不大，是典型的非理想体系，醋酸不仅在液相具有强的

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。