反应时间

The results indicate that the acetophenone conversion is affected orderly by substrate concentration, reaction time, reaction temperature and yeast concentration.

结果表明，影响苯乙酮转化率的因素依次为底物浓度、反应时间、反应温度和酵母浓度，影响1苯基乙醇对映选择性的因素依次为反应温度、底物浓度、酵母浓度和反应时间。

The optimal conditions were found as follows: reaction temperature 90℃, reaction time 50 min, the molar ratio of catalyst to diethyl adipate 1.1:1, providing 99.5% yield.

结果表明，各试验因素的影响效能为反应温度（反应时间（催化剂用量；最佳合成条件为反应温度90℃，反应时间50 min，催化剂与原料的摩尔比为1.1：1，在此条件下，常压合成目标物的产率可以达到99.5%。

Reaction schedule of root restriction in cucumber was related to culture period and root restriction degree.

限根反应时间与栽培时期及限根程度有关，春茬12L、8L、4L处理黄瓜的限根反应时间分别为定植后49d、64d、79d，秋冬茬黄瓜的限根反应时间则分别提前了15d。

Take a type of ship to air missile weapon system for example, the model is used to simulate and analysis the reaction time under the conditions of different operation environment by using Monte Carlo method, and the impacts of the operator's quality on the reaction time are also discussed,and then some helpful conclusions are obtained.

描述了舰空导弹反应时间基线网络模型的建立方法，并以某型舰空导弹武器系统为例，利用此模型并运用蒙特卡洛法对该武器系统在不同作战环境下的反应时间进行了仿真计算及分析，同时讨论了人的素质对反应时间的影响，得出了一些有益的结论

Through changing various conditions, the conversion of polymerization was determined gravimetrically by sampling with an injector at different time in the course of polymerization system and it was found that conversion was increased linearly firstly and non-linearly finally along with reaction time.

通过改变单一聚合条件，在不同反应时间，利用注射器进行取样，称重法测定聚合物转化率，考察聚合条件的影响，说明此合成体系受单体/引发剂、催化体系、聚合温度、反应时间等因素的影响(如聚合温度90℃，反应时间12h时，产率可达90%以上)。

In this article, high DS and low viscosity carboxymethyl starch was prepared in aqueous media through the reaction between corn starch with acid treatment and etherifying agent, the effect of acid treatment time, liquor/material ratio, the amount of sodium hydroxide, the amount of monochloroacetic acid, etherification time, and reaction tempera.

以玉米淀粉为原料，采用酸化-醚化复合变性的方法在水相中制备高取代度低黏度羧甲基淀粉，探讨了酸化时间、液固比、NaOH用量、ClCH2COOH用量、醚化反应时间、反应温度对羧甲基化过程的影响，研究发现，对原淀粉进行酸化，可以在不增加其它反应试剂用量的基础上提高产物的取代度，但是酸化时间不应过长。

The factors which mostly affect the quality and output of the product including molar proportion of reagents, reaction temperature, alkaline concentration and reaction time are analyzed. After orthogonal experiment, it is concluded that the optimized reaction condition is that acetone and furfural are charged with equal molar quantities at 40 with sodium hydroxide (0.10 mol/L) and the operation time 5 h.

通过对影响亚糠基丙酮质量和收率的主要因素原料配比、反应温度、碱浓度、反应时间等单因素实验，探索出合成亚糠基丙酮的优化反应条件为：原料配比n：n=1.0：1.0、反应温度40℃、氢氧化钠溶液浓度为0.01 mol/L、反应时间5h。

The effect of reaction temperature,reaction time,materials ratio on the synthesis of piperidine alcohol benzoate ,hindered amine light stabilizer,from piperidine alcohol and benzoyl chloride by direct condensation were studied,and the proper technological conditions were given as follows:the reaction temperature is 95℃;reaction time is 4 h; the mole ratio of reactants,n∶n is 1∶1.4,the amounts of solvent is 40 mL(based 0.1mol piperidine alcohol),the arerage yield ...

王树清，高崇，苯甲酸哌啶醇酯HALS的合成工艺研究研究了以苯甲酰氯和哌啶醇为原料直接缩合合成苯甲酸哌啶醇酯受阻胺光稳定剂时反应温度、反应时间、原料配比等条件对合成反应的影响，确定了最佳工艺条件。最适宜的工艺条件是：反应温度95℃、反应时间6h、原料摩尔比n∶n为1∶1.4，溶剂用量为70mL(相对于0.1mol哌啶醇)，苯甲酸哌啶醇酯的收率为91.05%，产品纯度98.5%。

In order to meet the needs of the research work of driving suitability, a 'human body behaviour characteristics test apparatus'is developed. This apparatus can be used to test the simple reaction time, the choice reaction time, the action reaction time, the rapidperception ability and the ability of pursuit. It can display and print test results.

结合驾驶员的驾驶适宜性研究工作，开发研制了&人体行为特性测试仪&，这台仪器具有多项测验功能，能够测试人的简单反应时间、选择反应时间、动作反应时间，快速知觉能力和跟踪能力等多项人体行为特性指标，并且能够显示和打印输出测验结果。

In allusion to drivers′ response time state under the conditions of rain,fog,strong light and dark pavement,the relationship between visibility,glare strength,pavement brightness and response time of drivers are studied. The results show that response time of drivers increases with visibility,glare and brightness decreasing.

针对雨、雾等灾害性天气以及强光、路面亮度不足等恶劣环境下驾驶员的反应时间状况，在国内外研究现状的调研分析的基础上，对能见度、眩光强度、路面亮度等道路环境与驾驶员反应时间的关系进行研究，结果表明驾驶员的反应时间随能见度增加、眩光增强、亮度减少而增长。

He knows that he's one of the mostdominant players in the NBA right now.

我知道他现在是联盟里最有统治力的球员之一了。

Using analysis method of BCG , the dissertation analyzed the management of voluntary service organizations .

利用BCG分析方法对我国的志愿服务组织管理进行了分析。