溶剂

Moreover, the effects of alkali metal carbonate promoters and the solvents were investigated at the same time.

考察了碱金属碳酸盐类助剂和溶剂对反应活性的影响。

Their cation binding behavior to alkali and heavy metal ions was evaluated by solvent extraction of aqueous metal picrates.

进而采用溶剂萃取的方法研究了它们与一价金属阳离子的键合行为。

PTFE is insert to nearly all industrial chemicals and solvents except for alkali metal.

PTFE几乎对除碱金属外多有的化学药品和溶剂都是稳定的。

The findings of present work show that organic/water ratio,alkali metal alkali, phase transfer catalyst, reaction time, reaction temperature, all of them have influence to the molecular weight and yield of the production.

详细研究了溶剂/水的配比、碱金属碱、相转移催化剂、反应温度、反应时间等因素对产品分子量和产率的影响。

Summed up the research progress that exceeds critical and extractive technology to apply at alkaloid to depart, analysed each elements of effect of influence alkaloid depart, outside waiting for common element except temperature, pressure, dissolvent, extractive time, alkalify reagent can improve the detached result of alkaloid, carry secretly agent rose to exceed the capacity of critical and extractive fluid.

综述了超临界萃取技术应用于生物碱分离的探究进展，分析了影响生物碱分离效果的各个因素，除温度、压力、溶剂、萃取时间等常见因素外，碱化试剂能够改善生物碱的分离效果，夹带剂则提高了超临界萃取流体的能力。

In this paper, based on the previous work experience, microscopic structures of electrolyte solutions and the tecknoledge of fourier transform spectroscopy and theory of quantum chemistry , we reseached on ionic solvation and ion association of the alkaline-earth metal electrolyte solution.

本文在总结前人工作的基础上，以研究电解质溶液微观结构为背景，借助傅里叶变换红外光谱技术和量子化学理论，对碱金属碱土金属电解质溶液中的离子溶剂化和离子缔合作用进行了研究，主要的研究内容如下：1。

Alkali metal; Alkaline-earth metal; ionic salvation; ionic association ; quantum chemistry

碱金属；碱土金属；离子溶剂化；离子缔合；量子化学

A colorless flammable liquid alkane derived from petroleum and used as a solvent .

一种无色、易燃烧的液体，从石油中提取，用作溶剂。

Alkane used primarily as fuel, solvents and organic synthetic raw materials.

烷烃主要用作燃料、溶剂和有机合成的原料。

The processes are first put forward that chloro alkane take partin reaction through free radical intermediates.

通过上述研究的实验结果，首次提出了〓／膦体系在上述溶剂中的自由基反应机理。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！