查询词典 extraction

ConclusionMicrowave extraction has the highest yield in the shortest time. But volatile oil in Heracleum hemsleyanum Diels extracted by supercritical CO2 extraction or steam distillation has better quality.

结论微波萃取挥发油得率最高，时间最短；超临界CO2和水蒸馏法萃取挥发油的质量最好，因此使用超临界CO2是萃取牛尾独活挥发油的最佳途径。

This paper introduces a method of accurate information extraction based on Heritrix according to the shortage of Web information extraction technology.

针对现阶段Web信息抽取技术的不足，提出一种基于Heritrix的精确抽取方法，由三个分别独立的功能模块共同完成。

Confirm the optimum extraction technics of polyphenol of Humulus lupulus by single factor and orthogonal test: impregnant's concentration 70%, the ratio of materiel and impregnant 1:25, circumfluence temperature 45℃, time 1h and extraction quantity achieve 47.29mg/g dry Humulus lupulus at this condition.

通过单因素和正交试验确定了酒花多酚的最佳提取工艺：浸提剂为70%丙酮，料液比1：25，回流提取温度45℃，提取时间为1h，在此条件下多酚的提取量达到47.29mg/g干酒花。

Liquid-liquid extraction of hydrophile organic solvent is a new,green,high-efficiency separation technique,which has been applied in the field of extraction of heavy metal ions and purification of biologic active substances.

亲水有机溶剂液-液萃取分离是一种绿色高效分离新体系，由于兼有工艺简单、快速高效、环境友好等特点，受到研究人员的重视。

Cloud point extraction is related to the conventional liquid-liquid extraction. CPE based on the solubility and cloud point phenomenon of aqueous solutions of surfactants, upon alteration of the experimental conditions such as pH value of solution, ionic strength, temperature, and the solution is separated into phases, which results in the separation of hydrophobe and hydrophile.

浊点萃取(Cloud-Point Extraction， CPE)是近年出现的一种新兴的液-液萃取技术，它以表面活性剂胶束水溶液的溶解性和浊点现象为基础，通过改变实验参数，如溶液的pH值、离子强度、温度等引发相分离，从而将疏水性物质与亲水性物质分离。

The review highlights the technical developments in the identification,quantification and separation of α-hydroxyacetic acid,especially solvent extraction and synergistic extraction.

文章比较了各种羟基乙酸定性及定量分析方法，综述了羟基乙酸分离方法，特别是溶剂萃取和协同萃取效应。最后，分析了羟基乙酸的开发前景。

Change of arch width after extraction and nonextraction treatment;2. Effects on arch width after extraction and nonextraction treatment;3. Intercanine and intermolar arch widths and anterior arch depths of the maxillary and mandibular arches were measured.

结论与不拔牙矫治相比，拔牙矫治不会减小尖牙间牙弓宽度和前牙段牙弓长度而影响面部美观；但拔牙和不拔牙矫治都能引起磨牙间牙弓宽度的改变，可能影响疗效的长期稳定性。

To improve the extraction of gold from electronic waste, statistical methods were used to analyze the impact of different factors affecting the extraction of Au using methyl isobutyl ketone as solvent.

以电子废料中的金为研究对象，用统计学方法对甲基异丁基甲酮萃取电子废料中金的影响因素进行了探讨和分析。

In order to investigate the effects of magnetic field on the liquid-liquid extraction,the extraction process of acetone-water-methyl isobutyl ketone system was studied under magnetic field with different magnetic induction intensities.

为探讨磁场对液-液萃取过程的影响，本研究在不同磁感应强度的磁场中，对丙酮-水-甲基异丁基酮物系的萃取过程进行了研究。

The kinetic mechanism of extraction reaction and the influence of isobutyl alcohol on the extraction rates of uranium with TOA are examined.

测定了三辛胺浓度、硫酸浓度、温度和异丁醇对萃取速率的影响。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切