反应物

The effects of the intensity of basicity and the molar proportion of reactants on the reaction are discussed.

对1，3-环己二酮在碱性条件下的甲基化反应进行了对比研究，利用IR和1H NMR对产物结构进行了表征，讨论了碱性强弱和反应物物质的量之比对该反应产物的影响

However, statement II does give a true statement of the relationship of coefficients in a balanced equation of gaseous chemical reaction.

因为。配平的反应方程式的各个反应物的系数表明了参加反应的气体之间量的关系

The optimal conditions were found to be with reaction temperature of 40－50 ℃,the ratio of chitosan to citral of 1∶6 and 10 h of reaction time.

最佳条件为：反应物配比n∶n=1∶6，反应温度40～50 ℃，反应时间10 h，壳聚糖席夫碱的缩合率可达86%，取代度为0.82。

Effect of the ratio of chitosan to citral,reaction time and temperature on the yield and the degree of substitution has been investigated.

采用[L9（33）]正交实验探讨了反应时间、反应温度及反应物配比对壳聚糖席夫碱缩合率和取代度的影响。

Optimization of resolution conditions and affecting factors on resolution such as solvent, the molecular ratio of racemate to resolving agent, method of reaction, concentration of racemate, crystallization temperature and crystallization time were studied.

对影响拆分的因素溶剂和底物浓度通过均匀实验进行了优化，同时对其他影响因素如底物与拆分剂投料比、反应物溶解方式、结晶时间和结晶温度等进行了考察。

The rate of a reaction depends on the concentration of the reactants and the temperature.

反应速率取决于反应物的浓度和温度，它也取决于反应的反应起始能量。

The reaction temperature and reactants concentration have important influence on the morphologies of the products.

反应温度和反应物浓度对产物的形貌影响较大，反应时间对产物的形貌影响不大，但随着反应时间的延长，产物的粒径有增大的趋势。

Effects of mass ratio of reactants,catalyst dosage,reaction time,reaction temperature and catalyst reuse were discussed.

考察了反应物质量比、催化剂用量、反应时间、反应温度和催化剂重复使用等因素对反应的影响。

The aniline HDN was strongly stressed by the presence of quinoline and DHQ and the HDN of quinoline proceeds exclusively via a pathway which involves fully saturated intermediates on the MCM-41-supported nickel phosphides. The HDN activity of nickel phosphide catalyst was dramatically reduced by the presence of H2S and DBT, probably due to the strong adsorption of H_2S and DBT on active sites which inhibited the adsorption of quinoline.

喹啉和DHQ对苯胺的HDN反应有强烈的抑制作用，喹啉在磷化镍催化剂上几乎全部通过完全加氢饱和路径进行反应。H_2S和二苯并噻吩强烈地吸附在磷化镍催化剂活性中心上，阻碍了反应物分子的吸附，从而对喹啉的HDN反应有强烈的抑制作用。

In the third step, when the ratio of racemic ester to benzenesulfonyl chloride to triethylamine to catalyst 4-DMAP is 1:1:1:0.1 in 10℃, the yield is 82.9% and high purity is obtained by crystallisation.

在第三步磺酰化反应中，得到合成消旋2-苯磺酸基-2(2-氯苯基)乙酸甲酯的较佳反应条件为邻氯扁桃酸甲酯：苯磺酰氯：三乙胺=1：1：1，催化剂4-DMAP用量为摩尔反应物的10%，反应温度为10℃，收率为82.9%，同时用结晶方法获得高纯度的产物。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。