查询词典 ethanol

Taking the ampelopsis as the raw material,under the condition that ethanol soaks to prepare the processing,taking water as the associated extract dihydromyrictin.

以干藤茶叶为原料，采用乙醇浸泡进行预处理，以水为溶剂提取二氢杨梅素，考察了乙醇预处理时间、茶叶与乙醇的料液比、加热时间等因素对提取率的影响，通过单因素分析和正交试验设计，确定了最佳提取工艺条件。

It was denoted that the toxicity of amphoteric surfactants is same as that of nonionic surfactants,which is lower than that of ionic surfactants and even lower than the toxicity of ethanol.

指出两性表面活性剂的毒性与非离子表面活性剂一样比离子型表面活性剂的低，甚至比乙醇的还要低。

Crystallization was the key step in the process of extraction of amygdalin. Considering the purity and crystallization ratio of amygdalin, the amounts of ethanol and ether was chosen as 1:18 and 1:0.4, crystallization time was 36h.

结晶是分离、纯化苦杏仁苷的主要步骤，本文综合考虑结晶纯度和结晶得率，乙醇添加比为1：18，乙醚添加比为1：0.4 ，结晶时间选择36h。

The enzyme-inactivated and fat-skimmed material and 80% ethanol as the solvent were used in the extraction of amygdalin. The optimum extraction techniques were determined by the orthogonal experiment which was based on the single-factor experiment.

原料经灭酶、脱脂后，确定以80%乙醇溶液为溶剂来提取苦杏仁苷，通过单因素实验确定正交实验方案，进而得出较佳的提取工艺。

It can be mutually dissolved with water, methanol, ethanol, amyl alcohol, phenol, glycerin and so on.

乙二醇闪点为116℃，沸点为197.6℃，燃点为121℃，常温下为无色透明粘稠液体，易吸潮，与水、甲醇、乙醇、戊醇、苯酚、甘油等互溶，微溶于乙醚。

So the effect of different solvents, such as methanol, ethanol, butanol, tertiary butanol, isoamyl alcohol, tertiary amyl alcohol, diethyl ether and cyclohexane, on the reaction was explored.

在文献所报道的应用K〓CO〓作催化剂、CH〓I既作促进剂又作部分反应物的由原料甲醇与二氧化碳直接合成碳酸二甲酯工作的基础上，在体系中加入离子液体emimBr后，研究了emimBr对合成反应的影响。

Biomass is a widely-existed renewable resource. The natural biomass used to produce ethanol by fermenation is mainly divided into three types: sugar, amylum and cellulosic materials.

生物质是一种广泛存在的可再生资源，经发酵生产乙醇所用的天然生物质资源原料主要分为3类：糖、淀粉和纤维素物质。

Ethanol is a product of anaerobic respiration in plants, and waterlogged roots suffer from a shortage of oxygen.

乙醇是植物无氧呼吸的产物，水淹的植物根系受到短时间的缺氧。

Objective To study the efficacy of ethanol,calcium gluconate and lidocaine as local infection in the treatment of the angioma of children.

目的探讨乙醇、葡萄糖酸钙注射液和利多卡因混合局部注射治疗血管瘤。

The traditional methods to produce anhydrous ethanol were introduced briefly in this paper.

简要介绍了传统制取无水乙醇的方法，重点介绍了生物质吸附法制取无水乙醇的方法及国内外的进展情况，并对无水乙醇的制取方法进行了展望。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。