查询词典 reaction

With methanol as solvent and NaOH as catalyst,the influence of the concentration of NaOH ,reaction temperature and reaction time to the alcoholysis of polyvinyl acetate is studied by the homogeneous design procedure.

使用均匀设计法研究了甲醇作为溶剂，氢氧化钠作为催化剂时，聚醋酸乙烯酯醇解反应中碱的物质的量比、反应温度和反应时间对聚乙烯醇醇解度的影响。

At the same time,the results show that the ability of enzymatic hydrolysis reaction is strong compared to the enzymatic glycerine alcoholysis reaction.

既然酶催化水解易于进行，因此，下文进行了酶促水解制备DG的研究。

Or so. What's more, the theory of the films shaping and conducting is discussed. There are some key reactions such as alcoholysis reaction in the processing of Sol preparation, dehydration reaction and condensation polymerization when films are coated and consolidation in the process of desiccation and sinter.

左右。分析了溶胶-凝胶法制备薄膜的形成机理和导电机理，对薄膜形成过程进行分析，归纳出形成过程的化学反应主要有：溶胶制备中的醇解反应、浸渍提拉镀膜中的水解和缩聚反应以及干燥和热处理成膜中的聚合、分解与键合反应。

The key steps to determine the stereoselectivity of products are the Michael reaction step and aldol reaction step.

4反应过程中的Michael反应与羟醛缩合反应是决定产物立体选择性的决定性步骤。

The key reaction included Aldol condensation,CBS asymmetric reduction and Mitsnobu reaction.

合成过程中的关键反应为Aldol缩合，CBS不对称还原，Mitsnobu反应等。

The electric charge transfer reaction of clarithromyc in and alizarin has been studied and the optimal reaction conditions have been found out.

研究了克拉霉素和茜素在甲醇介质中的电荷转移反应，确定了最佳反应条件。

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。

The reaction performance that the soda acid sex of carrier and the size of the area that compare a list affect activator directly, of the compound carrier surface that decorates via alkaline-earth metal alkalescent increase, rose to leave capacity to the adsorptive solution of CO2, activation agent is shown in reforming reaction better fight carbon deposit ability.

载体的酸碱性和比表面积的大小直接影响到催化剂的反应性能，经碱土金属修饰的复合载体表面的碱性增强，提高了对CO2的吸附解离能力，使催化剂在重整反应中表现出较好的抗积炭能力。

Mannich reaction is an important organic reaction, having the important application in the synthesis of the medicine and alkaloid.

曼尼希反应是一个重要的有机反应，在医药和生物碱的合成中有着重要的应用价值。

Results showed that using aluminum trichloride combined catalyst under the conditions of a catalyst dosage of 5%, a benzene/olefin molar ratio of 8, a reaction temperature of 60℃ and a reaction time of 6 h, the yield of alky-benzene reached 19.6% and the quality of the obtained alkylate was significantly improved as compared with coker gas oil.

结果表明，采用三氯化铝复合催化剂，在催化剂质量分数为5%、反应温度60℃、苯烯摩尔比为8、反应时间6 h的条件下，烷基苯收率达到19.6％，烷基化油的质量明显优于焦化柴油。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。