催化的

The species distribution in hydrolytic polymeric aluminum solutions is a research focus in the fields of analysis, catalysis, agrology, geochemistry, new materials, environmental science, biotoxicology, etc..

水解聚合铝形态一直是分析、催化、土壤、地球化学、新材料、环境科学和生物毒理学等众多领域研究的前沿和热点。

Using peroxide oxidation catalyst of wet air oxidation ,the fixed bed on active carbon installation is put forward.

采取湿法催化过氧化物氧化法，提出独特的碳载固定床装置。

In the function of sodium methoxide, several factors effecting on alcoholysis of urea by zinc oxide catalyst were obtained.

探讨了在甲醇钠作用下，氧化锌催化尿素醇解的影响因素。

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。

The catalytic effects of 1a on the direct aldol reaction in water were much better than that of 1b.

与有机相中的反应相比，在水中反应时，1a比1b催化活性更高。

The catalytic mechanism of prolinamide phenol on the direct aldol reaction was studied using quantum mechanics theory.

利用量子力学理论研究了脯氨酰胺酚类催化剂催化直接不对称Aldol反应的机理。

We first examined the ability of the catalyst to promote the direct aldol reaction between acetone and 4-nitrobenzaldehyde under various conditions.

通过偶联反应将催化剂1固载到硅胶上，并将其用于催化环己酮和硝基苯甲醛的aldol反应，dr值最高达到90：10，ee最高76%。

The catalytic efficiencies of a variety of fatty ketones, alicyclic ketones and heterocyclic ketones and the impact factors were reviewed in the paper.

本工作对各种脂肪酮、脂环酮、杂环酮对烯烃环氧化催化能力的大小及其影响因素进行了评述。

These reactions are usually the catalyst in acid or alkali under ...

这些反应通常在酸或碱的催化作用下进行。。。。

In the contrast, the effect of the kind of catalysts on oxidation of alkane under mild condition has been paid little attention.

相比之下，在氧化条件下，对此类催化剂催化烷烃反应研究的不多。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。