查询词典 reaction rate

It is worth mentioning that the Fe-Ti-C system of 75wt% Fe content belongs to low exothermal system, the combustion synthesis reaction took place at 734'C under the preset heating rate 1000℃/s based on the electric field, and there were small TiC particles without Fe〓Ti in the products, which also was one of the novelties of this research.

值得一提的是，对于Fe含量高达75wt％的Fe-Ti-C体系实际上属于低放热体系，然而在电场诱导下，当预设升温速度提高至1000℃/s，在743℃时发生了燃烧合成反应，所获的合成产物中TiC颗粒细小，且没有Fe〓Ti相出现。

Through the regression analysis of critical radius ,it is show that Zn nanoparticles' diameters are determined by reaction pressure and irrelated to the rate of airflow.

标 签 Zn/ZnO 纳米粒子激光化学临界粒子半径r* Zn/ZnO nanoparticles laser chemistry critical radius r

Rate enhancement in ligand-free palladium catalyzed Suzuki reaction by Lewis acid promoters;2. Metoprolol was synthesized with isopropylamine and 4-(2-methoxyethyl)phenyl glycidyl by different Lewis acid .

Lewis酸催化对甲氧乙基苯基缩水甘油醚与异丙胺的反应得到美托洛尔，考察不同的催化剂、反应温度、反应时间对反应的影响。

The results show that solid superacid catalysts have higher activities,reaction time being short,higher conversion rate of isovaleric acid.

结果表明：此法催化剂用量少、催化活性高、反应时间较短、异戊酸转化率高、工艺简单、在一定条件下催化剂可以重复使用多次。

By Sketchy Method Alternately rate constant of oil and fat hydrogenation reaction was calculated,and furthermore Selectivity Ratio of linoleate and linolenate was calculated respectively in the paper.

提出迭代作图法，用以计算油脂氢化反应速率常数，进而计算三烯酸、二烯酸的选择性比。

A preliminary study on substrate specificity of Lumbricus Bimastus nucleaseTo measure degrade rate of DNase E to several different substrate in optimal reaction condition to demonstrate the substrate selectivity of DNase E. Agarose gel electrophoresis was used to investigate the products of DNase E processing double strands cyclic DNA to investigate the action of DNase E.

双胸蚓组织核酸酶底物特异性的研究测定DNase E在最适反应条件下对不同底物的降解速率，证明DNase E降解底物的选择性；应用琼脂糖凝胶电泳对DNase E水解双链环状DNA后的产物进行鉴定，阐明DNase E的水解方式。

It wasfound that the surface structures of the composite microspheres could be altered to acertain extent by simply varying the rate of deposition reaction. It had been confirmedthat the proposed method can also be used for the preparation of other meatal sulfide-polymer composite microspheres, such as ZnS-P(NIPAM-co-20%MAA).

实验结果表明，与模板微球相比，复合微球呈现出较为粗旷、清晰的表面结构，且通过控制硫化物的沉积反应速度可以在一定范围内调控金属硫化物-高分子复合微球的表面形貌。

In the experiments, detection rate and reaction time were measured to evaluate the visual performance of human eyes at three mesopic light levels0.01, 0.1 and 1 cd·m~(-2 with targets of two visual angles (10 and 2°) at two observing eccentricities (0°, 10°). There generated more than 30,000 single measured data and analysis with statistical and computer methods were done.

本论文的实验选用了探测率和反应时间作为评价人眼在中间视觉状态下视觉功能的主要参数，分别在3组典型的中间视觉亮度作为背景亮度0.01，0.1和1 cd·m~(-2和2组不同视场角的目标(10'和2°)以及2组不同的观测偏心度(0°，10°)条件下，先后在中国和德国进行了30，000多个数据采样，并运用计算机技术进行统计分析和研究。

The results indicate the effect of light level, visual angle and eccentricity on detection rate and reaction time at mesopic region; shows series of spectral luminous efficacy drawn out from the experimental results since monochromatic stimulus was used; proves that the results from performance-based method are in essence compatible with those from bright-matching method, since both of them are in accordance

本论文实验和计算结果确定了背景亮度、视场角和偏心度对人眼探测率和反应时间的影响程度；根据视觉功能的基础和实验中选用单色光谱作为视觉目标所得到的数据推导出人眼在中间视觉状态下的系列的光谱光视效率函数；本文研究结果证实了基于视觉功能法和视亮度匹配法所获得的光谱光视效率函数在本质上的一致性，它们都能反映出随着亮度降低而产生的浦尔金耶偏移效应(Purkinje-shift)，但本论文所采用的基于视觉功能法还能反映出人眼视觉信息处理中的颜色通道效应。

The treatment of wastewater with high concentration of copper from Phthalocyanine Green pro - duction was tested by the microelectrolysis of iron filings to study the effects of the pH value of the wastewater,the dose and particle size of iron filings,the reaction time,etc.,on the removal rate of copper.

酞菁绿是有机颜料中的一个重要品种，其生产过程的放料、沉降及吸附等工段均有大量的母液和漂洗废水排出，该废水呈强酸性，且含有大量的铜离子及铝离子和几万毫克每升的氯离子。

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％。