查询词典 solvent

The effects of solvent on the bromization reaction and oxidant on the formolation reaction of the target product were studied. The results show that the optimum solvent for the bromization reaction and the optimum oxidant for the formolation reaction of the target product were carbon tetrachloride and ceric ammonium nitrate, and their yields were 86.7% and 89.3% respectively.

同时就溴化反应中的溶剂以及甲酰化反应中的氧化剂对两类反应的影响分别进行了研究，结果表明溴化反应的最佳溶剂为四氯化碳，反应产率达到86.7%，甲酰化反应的最佳氧化剂为硝酸铈铵，产率达到89.3%。

In the system, cetyl trimethyl ammonium bromide was used as the surfactant, Octane was used as the solvent and hexanol was used as the co-solvent.

在此萃取体系中，以十六烷基三甲基溴化铵作为表面活性剂，辛烷和己醇作为溶剂及助溶剂。

Then bis chloroformate was reacted with aromatic amines under the appropriate solvent and appropriate catalyst, after removed the solvent to obtain one kind of new amine-terminated polyether.

以聚氧化丙烯为基础原料，与光气在合适的溶剂下经过传统的低温、高温两段法光气化反应合成氯甲酸二酯，然后再与芳香多胺在合适的溶剂和催化剂下反应，脱除溶剂后得到一种新型的端胺基聚醚。

We have studied the electrochemical oxidation reactions of bilirubin, biliverdin, bile-purpurin and choletelin in H〓O+DMF mixed solvent and found that the oxidation reactions of these bile pigments were greatly sped up by the introduction of water into DMF, and discussed the effect of water on their oxidation mechanisms too, and determined the reaction rate constants in the mixed solvent.

利用现场紫外-可见及时间分辨光谱电化学技术，研究了胆红素、胆绿素、胆汁红紫素及胆黄素在DMF+H〓O混合溶剂中的电化学氧化反应，发现由于水的引入，使上述胆汁色素在DMF中的氧化反应大大加快。研究了反应的动力学，首次求出了反应的速率常数。

In the solvent does not occur in chromotropic, fading, and dry in the system of solvent release.

在相应的溶剂体系中，不会发生变色、褪色现象，且在体系干燥时有着良好的溶剂释放性。

The cinnamaldehyde as a main component in the essential oil was determined. The effects of type of solvent, temperature, extraction time and ratio of solid to solvent were examined and optimized.

考察了NPSMAE提取溶剂的种类、提取温度、提取时间及固液比等对测定的影响，同时将NPSMAE与超声波辅助提取及水蒸气蒸馏等方法进行了比较。

Has a very strong addition to condensable gas extraction capacities, including the pure solvent gas, condensate recovery by the second solvent, so that gas-liquid separation, refinement streaming, and can repeat the recycling use

具有极强的抽除可凝性气体的能力，包括纯溶剂气体，可通过二次冷凝回收溶剂，做到气液分离，精细化分流，且能重复回收使用

Do not dissolve in any solvent ( no solvent has attractive forces strong enough to break the covalent bonds).

不溶于任何溶剂（没有溶剂有足够强的吸引力可以破坏其中的共价键）。

The properties and structures of these films depend on their molecular weght, degree of deacetylate, the solvent, the temperature to remove the solvent from the chitosan solution.

壳聚糖膜的结构和性能取决于壳聚糖的分子量、脱乙酰度、溶剂以及除去溶剂的方式。

Anhydrous magnesium chloride may be prepared from materials containing magnesium chloride such as magnesium chloride hydrate, carnallite or bittern by different dehydrating methods of organic solvent distillation or molecular sieve absorption, gas protective heating, discomposing the MgCl2-NH3 complex that can be composed from high boiling-point polar-solvent system...

无水氯化镁制备技术经历几十年不断的探索，取得了一些进步，但彻底改变耗能高、污染腐蚀严重、流程复杂的工艺过程，开发流程简单、低污染腐蚀、低成本的绿色工艺仍然需要更深入的研究。

Sodium citrate; calcium carbonate; calcium hydroxide; potassium bicorbonate; magnesium carbonate; ferrous sulphate; Zinc sulphate; copper sulphate; manganese sulphate; potassium iodide; sodium selenite.

柠檬酸钠；碳酸钙；氢氧化钙；碳酸氢钾；碳酸镁；硫酸亚铁；硫酸锌；硫酸铜；硫酸锰；碘化钾；亚硒酸钠。

All this to say that I'm glad filmmaking hasn't become completely ironic. I can enjoy an ironic film as much as the next person, but they usually involve a message of some sort. One that's delivered in a smirkingly clever way that requires little in the way of talent.

所有这些都是说，我很高兴电影制作没有变成完全讽刺艺术，我可以和下一个人一样享受讽刺电影的乐趣，虽然他们经常会被划归到一定级别，技术方面不需要很高的才能。