考察的

The effects of the amount of the catalyst, reaction temperature and reaction time on the yield of the ester have been investigated.

考察了催化剂用量、反应温度和反应时间对酯产率的影响。

The influence of reaction temperature and reaction time on degree of esterification were investigated.

通过正交实验考察了反应时间、反应温度对聚乙烯醇酯化程度的影响。

The effects of esterification temperature, feed rate and method on demulsifying results were investigated.

实验考察了酯化温度、共聚单体量、加料速率和方式等对破乳性能的影响，确定了最佳工艺条件。

In this paper, we recounted the recent development of solid supeeracids and their appliance in esterification.

采用溶胶一凝胶法制备SO_4~(2-)/TiO_2-SiO_2固体超强酸催化剂，考察它在乙酸甲酯酯化反应中的催化活性。

Performance of the catalyst in oxidative coupling of m ethane and oxidative dehydrogenation of ethane at low temperature was studied.

采用沉淀法制备了纳米La2O3催化剂，并考察了该催化剂对甲烷氧化偶联和乙烷氧化脱氢反应的催化性能。

Properly selected reaction temperature can suppress the secondary reactions and enhance the production of propene and ethene.

以MCM-49分子筛为催化剂，纯1-丁烯为原料，考察了反应温度对烯烃催化裂解制丙烯、乙烯反应性能的影响。

Catalytic cracking process for production of propylene and ethene from 1-butene was investigated using MCM-49 zeolite.

以MCM-49分子筛为催化剂，纯1-丁烯为原料，考察了反应温度对烯烃催化裂解制丙烯、乙烯反应性能的影响。

If we want to understand the nature of the teaching system, we must study the scientific nature, the ethicality and the cultural conditionality of the teaching system.

要深入了解教学制度性质，必须对教学制度的科学性、伦理性和文化制约性进行认真考察。

From the viewpoint of ethnobotany, this paper examines the Chinese vocabularies on lotus Nelumbo nucifera Gaertn.

从民族植物学的角度考察汉语中关于莲（NelumbonuciferaGaertn。

The eucalypt and its plantation management in Austualia and Brazil were investigated.

考察了澳大利亚和巴西2个国家的桉树，特别是桉树人工林经营状况。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。