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changing reaction
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  改变反应
     Synthetic condition of new type heat stabilizer dibutyltin dilaurate were studied , and also make a certain improvement on experimental method based on the reaction mechanism of composing dibutyltin dilaurate in direct method, by means of changing reaction temperature, reaction time and mixture ratio.
     对新型热稳定剂二月桂酸二丁基锡合成条件进行了研究。 根据直接法合成二月桂酸二丁基锡的反应机理,通过改变反应温度、反应时间和配料比,并对实验方法作了一定的改进。
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     Nanostructured Bi2S3,CdS and ZnS semi conductors with different sizes and morphologies were synthesized using hydrothermal, solvothermal and liquid-phase method at low temperature through changing reaction conditions. The products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), selected area electron diffraction (SAED).
     本文利用水热、溶剂热等液相法,在低温下通过改变反应条件制备了不同尺寸和形貌的Bi_2S_3、CdS和ZnS纳米结构半导体材料,利用XRD、TEM、SAED等测试手段对每一种材料进行了表征和分析。
短句来源
     It was found that temperature affected AlN particle properties by changing reaction rate, viscosity and mean free path of g(?)
     温度通过改变反应速率、气体粘度和平均分子自由程等影响AlN粒子的合成,并存在最佳温度分布;
短句来源
     Lauroylamidopropyl betaine was synthesized with N,N dimethyl N ′ lauroyl 1,3 propylenediamine and sodium chloroacetate. The optimum reaction conditions were investigated by changing reaction temperature,reaction time and acidity of sodium chloroacetate,and the properties of the product such as foamability,foam stability and thickness were studied.
     以自制的N ,N 二甲基 N′ 月桂酰基 1 ,3 丙二胺和氯乙酸钠为原料合成月桂酰胺丙基甜菜碱 ,通过改变反应温度、反应时间和氯乙酸钠的酸度 ,探索反应的优化条件 ,并对合成产品的起泡性、稳泡性和增稠性进行研究。
短句来源
     The microwave-assisted technology can tune selectivities via changing reaction temperature for some organic reactions.
     微波辅助技术可以通过改变反应温度来实现改变某些反应的选择性。
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  “changing reaction”译为未确定词的双语例句
     By changing reaction conditions,the amplification efficiency of two gene was nearly 100%. Ct values of hnRNP B1 and β-actin were measured in samples stimultaneously.
     优化反应条件,使扩增效率接近100%,检测待检标本hnRNP B1和β-actin的循环阈值(Ct)。
短句来源
     The propeortion of 2 - chloropyridine and 2,6- dichloropyridine, the main products can be controled by changing reaction condition .
     控制反应条件, 可以改变2-氯吡啶和2,6-二氯吡啶 两种产物的比例,使其中某一种产物为主.
短句来源
     he selectivities to products of Fischer Tropsch (FT) synthesis over an industrial Fe Cu K catalyst are investigated in a fixed bed reactor by changing reaction conditions.
     通过改变操作条件,在固定床中研究了工业Fe-Cu-K催化剂上费托合成产物选择性的变化规律。
短句来源
     On Using Catalysts with Non-uniformed Activity Distribution in Changing Reaction
     在变换反应中使用活性非均匀分布催化剂的探讨
短句来源
     Also, the morphologies and particle sizes can be controlled by changing reaction conditions such as concentration and molecular weight of MAA-PEG macromonomer, concentration of styrene and solvent composition.
     调节苯乙烯浓度、MAA PEG浓度及介质组成可以控制颗粒大小 ,影响颗粒形态的主要因素是单体反应性差异和MAA PEG的分子量及浓度 .
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     By changing the reaction order,the productcomponents can be changed.
     当改变反应顺序时,可改变产物组成.
短句来源
     It reflected the changing tendency of reaction rate of limestone.
     其值越小,说明石灰石活性越大,即石灰石与SO2烟气的反应速率越快,反之则说明石灰石活性越小。
短句来源
     (n~+,d) REACTION
     (π~+,d)反应
短句来源
     Revolution and Reaction
     法国大革命与反应
短句来源
     Design is changing.
     设计不断地发展。
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  changing reaction
The cesium trapping characteristics with changing reaction temperature, carrier gas and gas velocity by the fly ash filter were analyzed.
      
This reaction represents a liquid two-phase reaction with changing reaction rates in a batch reactor.
      
The effects of changing reaction conditions upon the yield and purity of the product were examined.
      
The morphology of polymers could be controlled conveniently by changing reaction parameters.
      
In the presence of DMBA, Arrhenius plots of log tc (tc-cure times) versus inverse cure temperature show a changing reaction order over a wide range of temperatures.
      
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The kinetics of the polycondensation between diphenyl-dichlorosilane and bisphenol-A in equal mole ratio has been studied. As the velocity of the polycondensation in the molten state is unstable, the kinetic order can not be evaluated. However, after dilution with solvents such as naphthalene, diphenyl ether, acetophenone, etc. to certain degree, the kinetics of the polycondensation in the initial stage followed a second order reaction. Furthermore, at the same temperature, the stronger is the polarity of the...

The kinetics of the polycondensation between diphenyl-dichlorosilane and bisphenol-A in equal mole ratio has been studied. As the velocity of the polycondensation in the molten state is unstable, the kinetic order can not be evaluated. However, after dilution with solvents such as naphthalene, diphenyl ether, acetophenone, etc. to certain degree, the kinetics of the polycondensation in the initial stage followed a second order reaction. Furthermore, at the same temperature, the stronger is the polarity of the solvent, the greater is the reaction rate. By plotting the logarithm of rate constants in certain range of temperatures against the reciprocal of the absolute temperature, a linear relationship is obtained. The activation energy of the polycondensation in naphthalene, diphenyl ether, and acetophenone was found to be 17.1, 24.8 and 10.3 kcal/mole respectively. The reaction may be catalysed by the Lewis bases and their salts. It is assumed that the complexity of the polycondensation kinetics in the molten state is a manifestation of the changing reaction rate due to the changing polarity of the polycondensation system. An SN2 mechanism for the reaction has been suggested.

研究了二苯基二氯硅烷与双酚-A在等克分子比条件下的缩聚反应动力学。采用熔融缩聚时反应速率规律性复杂,结果无法处理;而用萘、二苯醚、苯乙酮等溶剂稀释至一定程度后,前期反应动力学呈现二级反应规律。当温度相同时,溶剂极性越大,反应速率越快;在一定温度范围内反应速率常数的对数与绝对温度的倒数标绘呈线性关系,获得在萘、二苯醚、苯乙酮中缩聚反应的活化能分别为:17.1千卡/克分子,24.8千卡/克分子,10.3千卡/克分子。Lewis碱及其盐对此反应有显著的催化效应。验证了缩聚反应过程中体系极性改变时,反应速率即发生对应的变化,阐明了熔融缩聚反应速率不稳定的原因。提出了反应系按S_N2机理进行。

Considering the axial temperature and concentration profiles in the thermal chemical vapor deposition (CVD) reactor, a one-dimensional reaction-coagulation model of particle size and distribution was established. For the AlCl_3-NH_3-N_2 system, the effects of the material and operation parameters on AlN particle size and distribution were studied. It was found that temperature affected AlN particle properties by changing reaction rate, viscosity and mean free path of g(?)ses. The particle size increased...

Considering the axial temperature and concentration profiles in the thermal chemical vapor deposition (CVD) reactor, a one-dimensional reaction-coagulation model of particle size and distribution was established. For the AlCl_3-NH_3-N_2 system, the effects of the material and operation parameters on AlN particle size and distribution were studied. It was found that temperature affected AlN particle properties by changing reaction rate, viscosity and mean free path of g(?)ses. The particle size increased with increasing residence time and reactant concentration. The AlN particle size distribution got narrower with increasing residence time, but changed little with increasing reactant concentration. The calculated results from model were consistant with that of experiment.

考虑轴向温度分布和浓度分布,建立了热化学气相淀积反应器中描述粒子粒度及分布的一维反应-凝并模型。研究了AlCl_3-NH_3-N_2体系物系参数和操作参数对AlN超细粒子粒度及分布的影响。温度通过改变反应速率、气体粘度和平均分子自由程等影响AlN粒子的合成,并存在最佳温度分布;随停留时间的增加,AlN粒子粒度增大,几何标准方差GSD减小;反应物浓度升高时,AlN粒子粒度增大,但GSD变化不大。模型化研究结果和实验结果相一致。

The influence of changing reaction conditions on the Vield of dipentaerythritol in the production of pentaerythritol was studied in order to search one route of producing pentaerythritol and dipentaerythritol simultaneously. The research rasults show that the yield of dipentaerythritol can be increased by reasonably choosing reaction conditions and feed methods. The results also show that raising reaction temperature, increasing base capacity and adding some of pentaerythritol are beneficial...

The influence of changing reaction conditions on the Vield of dipentaerythritol in the production of pentaerythritol was studied in order to search one route of producing pentaerythritol and dipentaerythritol simultaneously. The research rasults show that the yield of dipentaerythritol can be increased by reasonably choosing reaction conditions and feed methods. The results also show that raising reaction temperature, increasing base capacity and adding some of pentaerythritol are beneficial to the production of dipentaerythritol If the dipentaerythritol content in the product is more than 80%, the crystallization temperature must be controlled above 35℃ and the specific gravity of concentration is 1.12.

本文针对目前季戊四醇生产路线中的反应条件等进行改变,考察其对副产双季戊四醇的影响,寻找一条联产单季戊四醇和双季戊四醇产品的路线。实验中发现,合理地改变反应条件和加料方式是可以使双季戊四醇的比例提高。升高反应温度,增加碱用量和加入少许单季戊四醇都对双季戊四醇的生成有利。如果要使产品中双季戊四醇的含量达到80%以上,分离结晶温度应控制在35℃以上,浓缩液相对密度为±1.12。

 
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