考察

The article used some research methods that are about consulting the document and information, on-the-spot investigation, comprehensive analysis ,and so on, base on lots of data statistics and documents, according to the developing situation of the Cyclamen industry at home and abroad, combined with the Current situations of the Cyclamen industry development in Hebei province, and carried out deep analysis and explore of the Cyclamen industry in Hebei province.

本文采用查阅文献资料、实地考察调查、综合分析等方法进行研究，在查阅大量数据文献资料的基础上，根据国内外仙客来产业的发展情况，结合河北省仙客来产业发展现状，对河北省仙客来产业进行了深入的分析探讨。

Influences of the mole ratio of reactants,reaction time,dosage of catalyst and cyclohexane on yield are discussed.

考察了酸醇的物质的量比、反应时间、催化剂用量和带水剂用量等因素对酯收率的影响。

The influences of solvent, reaction temperature, and time on the conversion of cyclohexane were examined.

以环己烷氧化为探针反应，考察了上述负载催化材料的催化性能并分析了不同金属离子或取代基对催化剂活性及选择性的影响。

The characteristics of cyclohexane oxygen-enriched oxidation were studied.

研究了环己烷富氧氧化的特征，考察了进气氧浓度的提高对反应速度、选择性、安全性和经济性的影响。

The effects of various factors on the reaction were studied.It has been found that the optimum reaction conditions are that the amount of catalyst is 13.3% of the amount of cyclohexanol, the reaction time is 80 minutes and the reaction temperature is 200~210℃.

考察了催化剂用量、反应温度、反应时间等因素对脱水反应的影响，得出了其最佳的反应条件：催化剂用量为环己醇质量的13.3%，反应时间80 m in，油浴温度200~210℃。

The influence of reaction time,dosage of catalyst and molar ratio of cyclohexanol/acid were investigated in the presence of copper sulfate used as catalyst.

在较优催化剂CuSO4.5H2O催化下，考察了反应时间、催化剂用量、醇酸比等因素对酯化率的影响。

The effects of the molar ratio of potassium bromide to cyclohexanol, the amount of water and concentrated sulfuric acid, and reaction time on the yield was investigated.

考察了溴化钾与环己醇摩尔比、水用量、浓硫酸用量、反应时间对产率的影响。

The catalytic oxidation of cyclohexane to cyclohexanone and cyclohexanol in air as probe reaction was performed without any organic solvent or cocatalyst, and the influences of the amount of metal porphyrin, reaction pressure, reaction temperature and reaction time on the catalytic activity were investigated.

以空气氧化环己烷制备环己酮和环己醇为探针反应，在不加入任何有机溶剂或助催化剂的条件下考察了金属卟啉用量、反应压力、温度、时间等对其催化活性的影响。

As the success of benzene partial hydrogenation to prepare cyclohexene developed by Asahi Chemical Industry Co.,Ltd.,cyclohexanol prepared through cyclohexene is...

这一工艺关键是催化剂的设计及选择，因此本文主要对环己烯水合催化剂进行了考察，并进行了反应工艺条件的优化。

In this paper,the ketalization of cyclohexanone and ethylene glycol catalyzed by dealuminated USY was studied.

研究了脱铝超稳Y沸石催化环己酮与乙二醇的缩酮化反应，考察了催化剂硅铝比、催化剂用量、反应物配比、带水剂和反应时间等对缩酮化反应的影响。

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。