溶剂

A two dimensional model approach for the photodetachment dynamics of closed shell an-ionic systems in presence of external light field have been proposed in the context of polar environmental media.

利用外部光场，采用二维模型的方法研究了闭壳阴离子系统在极性溶剂环境介质中光解动力学过程。

The molecular weight dependence of the distribfition of polymer molecules between the coacervate and the dilute phases on the phase separation of polymethylmethacrylate-acetone-methanol system has been proved to follow the relation first derived by Flory for binary systems: f"_j/f′_j = Qe~_j where f"_j and f′_j are the weight fractions of the polymer molecules of molecular weight M_j in the coacervate and in the dilute phases respectively, while Q and σ are parameters.

1。聚甲基丙烯酸甲酯-丙酮-甲醇体系的两次分相实验用θ-溶剂中的沉降速度法测定分相前试样和浓相的分子量分布曲线，得到高分子在浓稀相重量分配的分子量依赖关系 f_j=Qe~证实Flory的溶度函数形式与实际相符，并适用于三元体系的相分离，但Q值与两相体积比R值并不相同。 2。再分级使级分的分子量分布宽度随再分级次数的增加而减小，通常认为到第三次再分级其效果已不显著并不确实。

The research of solid alcohol which is made of stearinic acid and sodium-hydroxide.The diversity of the amount and radio of coagulator,the gel temperature of solid alcohol is different.

固体酒精是介于固体和液体的一种物质形态，凝胶体系由胶凝剂所形成的三维网状结构和固定于其中的大量溶剂构成。

By the analysis of coal two-step extract by FTIR and comparison of extraction rate, we can see the two-step extraction with combination of cyclohexanone and CS〓-NMP (1: 1, v/v) has higher extraction rate as to coal of different degree of coalification.

4环己酮和CS〓－MP（1：1，v/v）复合溶剂的两步抽提对不同煤化程度的各煤种均保持了较大的抽提率，基本达到对不同煤种的可溶化要求。

A liquid aldehyde with a penetrating odor; made from plant hulls and corn cobs; used in making furan and as a solvent.

一种带渗透性气味的液体醛，用植物外壳和玉米芯制取，用于制呋喃或用作溶剂。

Aldehyde with a penetrating odor; made from plant hulls and corn cobs; used in making furan and as a solvent.

气味的液体醛，用植物外壳和玉米芯制取，用于制呋喃或用作溶剂。

The varying tendencies of partition coefficients of some compounds in aqueous or nonaqueous solvent systems by calculating the phase equilibria with universal quasichemical functional group activity coefficient model are predicted. These compounds included saturated and unsaturated fatty acids ethyl esters,N2,4dinitrophenylamino alcohols, pnitrophenyl glucosides and so on, with simple structures and much differences in polarity.

以饱和及不饱和脂肪酸乙酯、2，4二硝基苯胺基脂肪醇和对硝基苯基葡萄糖甙等结构较为简单、极性差别较大的溶质系列为研究对象，应用修正的通用基团活度系数模型，通过相平衡计算，预测了它们在含水或不含水的溶剂体系中分配系数的变化趋势，并与前人的工作进行了对比。

The analysis provides a theoretical basis for the choice of pigment, colophony, solvent and accessorial reagent in the formulation designing.

这些分析为后面的配方设计选择颜料、树脂、溶剂和助剂奠定了理论基础。

Ethyl lactate is one kind of comestible synthetic spicery. It is also one kind of good solvent.

摘 要 乳酸乙酯是一种食用合成香料，它还是一种非常好的溶剂。

This paper discuss the mechanism and process of making emulsive moistureproof dope for corrugated board with scrap polystyrene foam by selecting proper commix impregnant and emulsion .

本文叙述了以废弃的聚苯乙烯泡沫塑料为原料，选择合适的混合溶剂和乳化剂制取水乳性瓦楞纸箱防潮涂料的机理及过程。

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。