性能

Molybdenum-glycol complexes synthesized with different alkylene glycols and Mo/alcohol ratios have different acidity and catalytic activity. For the topic reaction, the catalytic activity of Mo-1, 2-ethandiol or Mo-1, 2-propanediol is higher than that of Mo-butanediol.

结果表明，用不同的二醇和不同醇／钼比制备的钼醇催化剂具有不同的催化性能和酸性，用乙二醇和丙二醇制备的催化剂，催化性能优于丁二醇制备的催化剂。

This method can be used to calculate the molar refraction of alkyne from molecular structure.

基团贡献法是根据分子中的基团计算分子性能的方法，具有适用范围广的特点，但对同分异构体的区分能力较差，对分子性能的计算结果误差较大。

The catalytic properties of Ti-MWW and the reaction conditions in epoxidation of allyl alcohol to glycidol have been studied. It was found that Ti-MWW-PI synthesized under dynamic crystallization conditions has more effective catalytic performance.

对Ti-MWW 催化烯丙醇的环氧化性能和反应条件进行了研究，发现动态法合成的Ti-MWW-PI 有更好的催化性能。

However, this method has its own limitation and can not obviously improve tribological properties of aluminum bronze alloys.

但是，这种方法对合金摩擦学性能提高程度有限，难以适应更高的要求，因而迫切需要发展新的技术来改善铝青铜合金的微观组织，以进一步提高其摩擦学性能。

Secondly, the effects of high temperature ECAE processing on hardness and mechanical properties of the aluminum bronze alloy were analyzed, and the mechanism of ECAE for the improvement of mechanical properties was discussed.

第二，系统研究了ECAE挤压后铝青铜合金硬度及力学性能的变化，阐明了ECAE热挤压工艺影响合金力学性能的作用机理。

The dealloying mechanism of material in service was discussed on the basis of analyzing the structural morphologies of aluminum bronze tube used in sea water pipe line system.

前言由于具有良好的机械性能、加工性能和耐海水腐蚀性能，铜基合金在海洋工程中有着广泛的应用[1]。

This article reviews the 200kA aluminum cell uses different aluminum oxide in different periods.

结合200kA铝电解槽在使用不同性能氧化铝期间产生的影响，从理论上、实践上对中间状氧化铝与砂状氧化铝的性能进行对比分析。

The methylated amidogen still held protonation at low pH. Therefore, the adsorption ability of biomass was almost unchangeable through methylation of amidogen in biomass. The acetylated amidogen lost protonation at low pH, and the capacity of dye adsorption of biomass decreased by 51.6% after acetylation of amidogen in biomass.

甲基化氨基在酸性条件下仍然可以质子化，故氨基甲基化修饰后染料吸附性能不变；乙酰化氨基在酸性体系中失去质子化能力，乙酰化修饰菌体染料吸附性能下降51.6%。

The content of Ni〓 in the reduced catalysts and the amount of dialkylmethylamine as main by-product in the amination products were closely related.

将催化剂的还原性能和催化剂进行胺化评价反应的选择性数据进行关联，发现催化剂的选择性和CuO的还原性能无关，而和NiO的还原程度密切相关。

The result shows that the activator which was made up of organic acid and organic amine complex satisfied the prospective demand.

结果表明：采用有机酸和有机胺复配制备的活性物质满足预期要求；复配溶剂满足沸点、黏度和极性基团三大原则；所制备的免清洗焊剂多项性能满足规范要求，达到了免清洗的要求，解决了助焊性与腐蚀性的矛盾；所制备的焊膏焊接性能良好，无腐蚀，固体残留量低，存储寿命较长。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷