查询词典 solvent

It can be divided into water-soluble solvent and oil-soluble solvent Protectant Protectant.

它又可分为水溶性溶剂型防护剂和油溶性溶剂型防护剂。

Methodsresearched the influences of solvent volume, extracting time and solvent ph value on extraction techniques for rauwolfia vomitoris afzel. with the water soluble alkaloids in extracts as index, the optimal condition by l9(34) orthogonal test was studied. the data obtained were analyzed for glm using sas 8.0 software package.

方法采用l9(34)正交实验，研究溶剂用量、提取时间、提取溶剂的ph条件3个因素对催吐萝芙木醇提工艺的影响，以提取物中的水溶性生物碱为指标，采用sas 8.0统计软件进行方差分析，得到最佳提取工艺。

The chewing gum is dissolved using a water-immiscible solvent requiring either evaporation and redissolution of the sample or solvent change during the SPE step.

口香糖溶解于与水不相溶的溶剂中，在固相萃取中既可以蒸发和重解样品又可以更换溶剂。

In recent years, salt-mixed solvent system has become a very important system. And with the development of studies on rare alkali metal rubidium and cesium, it is significant to study the rubidium / cesium salt-mixed solvent system.

近年来，盐—混合溶剂已构成了一类重要的体系，且随着对重稀碱金属铷、铯的了解，人们发现研究铷、铯盐—混合溶剂体系有着极其重要的意义。

Compared with other methods, the present solvent thermal method can produce ITO nano-powders with high purity and uniform particle size. The manipulation is very simple and convenient and no calcination process is needed. The reaction temperature can be as low as 190 ℃, which is by far the lowest temperature in ITO nano-powder preparation. The sample also gives a good dispersion property benefited from the unique solvent thermal reaction environment.

结果表明，制备的ITO纳米粉体为立方晶相，粉体的平均颗粒小于100 nm；与已有的ITO纳米粉体制备方法相比，本溶剂热法制备过程无需高温烧结、流程简单，反应过程所需的温度可低至190 ℃，是迄今为止文献报导制备ITO的最低温度，同时所得产物纯度高、粒度均匀、分散性很好。

Adding a few of co-solvent properly is favorable to SAA process in the experiments of water soluble drugs, and better results will be obtained. Considering solvent has significant effects on phase equilibrium in the saturator, ethanol is more suitable for the experiments of non-water soluble drugs.

处理水溶性药物时，适当地加入一些协溶剂有利于SAA过程的进行，并能得到更好的实验结果；处理非水溶性药物时，溶剂对混合器内的相平衡行为有重要的影响，乙醇更适合作为SAA过程的溶剂。

A compromise between the implicit and explicit models, known as discrete-continuum, cluster-continuum, semicontinuum, orsupermolecule-continuum model, is to include several solvent molecules around the solute into the QM part, but the rest bulk solvent is treated with the continuum theory.

结果表明：(1)，离散—连续组合模型既在从头算水平考虑了溶质分子和第一溶剂化层中溶剂分子间的短程作用，又包含了溶剂效应的长程静电作用；既包括了量子力学的精确性，又利用了连续场的高效性。

Impact of solvent soakage on charge storage stability and filtration efficiency is thoroughly discussed according to the Flory-Huggins solvent swelling theory.

根据Flory--Huggins的溶剂溶胀理论探讨了溶剂浸泡对材料电荷存储能力和过滤效率的影响规律。

Solvent sublation is a new kind of technique for separation and pre-concentration. Trace metal ions in water could effectively be pre-concentrated by solvent sublation.

溶剂浮选法是近年来出现的一种新型分离富集方法，它能有效的分离富集水中的痕量金属离子。

ESCA results show that silica is coated on surface of the polymeric microspheres. SEM analysis reveals that when water was used as a solvent, uniform silica coating on the surface of organic microsphere can be obtained, and when the reactive time is 10 minutes, an uniform coating layer can be prepared. But when tetrachloroethylene was used as a reactive solvent, an inhomogeneous silica coating is found on the organic microspheres.

由化学分析电子光谱仪纵深分析可以得到，矽的前驱物是藉由披覆方式附著在有机微球表面；SEM分析发现以水为溶剂所合成出之披覆有二氧化矽的有机微球表面呈现均匀披覆效果，并且当反应时间为10min时表面均匀披覆效果最好；而以四氯乙烯为溶剂的系统所合成之微球则呈现不均匀披覆。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。