反应物

It is a classical chemical process for production of methyl acetate. But by the limits of. the formation of azeotropes in the process, we cant obtain hign purity methyl acetate by normal unit operation.

醋酸甲酯的制备是一种经典的化学过程，但由于反应过程中形成共沸物的限制，通过常规的单元操作不能够得到高纯度的醋酸甲酯。

The steps were as follows: trimethyl borate-10 was synthesized from boron-10 trifluoride-ether complex and sodium methylate,which was hydrolyzed to synthetize boric-10 acid.

首先采用三氟化硼-10-乙醚络合物与甲醇钠反应生成硼-10酸三甲酯，之后水解合成硼-10酸。

And a glycochain IbGpl-OL-LbGp5-OL has been found out by the way of Pronase E or β elimination reaction to dissociate the glycochain from the molecules of glycoconjugate and through the separation and purification of it by gel column chromatography, and ion exchange ohromatography and then its repetitive unit construction has been tested by the ways and means of full hybridization and partial acid hydrolisis, methylate analysis, Gc, Gc/Ms, iH and 1/3 CNMR.

通过链霉蛋白酶E或β-消去反应等方法，将糖链从糖缀合物分子上解离下来，经凝胶柱层析或离子交换柱层析进行分离、纯化得到相应的糖链LbGp1-OL～LbGp5-OL。

The critical micelle concentration of RE was determined by using conductance and surface tension measurment.

在优化条件下反应，所合成的RE活性物含量为32.9％。

In this paper,Sn doped ZnO crystals were synthesized by hydrothermal method with 3M KOH as mineralizer.

采用水热法，在ZnO中添加SnCl2.2H2O作前驱物，3M KOH作矿化剂，温度430℃，填充度35%，反应24h，合成了掺杂Sn的ZnO 晶体。

In this paper,the solid solid state reaction of a few bis sulfides with copper acetate monohydrate is studied.

本文报道了醋酸铜与一些对称二元硫醚酸在室温下的固－固相配位反应，采用元素分析、XRD、IR、ESR、MS、磁化率、TG－DTA等手段研究了室温下固相合成配合物的组成和性质

The tetraoxazoline ligands only afforded the-configuration whether monometallic and/or bimetallic palladium complexes were formed upon the complexing process. Using the chelation-induced axially chiral palladium complex as a catalyst, excellent catalytic activities and enantioselectivities in the Wacker- type cyclization of allylphenols with up to 99% ee were gained.

当它与钯离子配位后只得到了轴构型为S的单金属或双金属配合物，并将该配体应用于钯催化的邻烯丙基苯酚的Wacker-type环化反应中，获得了很好催化活性和高达99% ee。

The property of the monomolecular catalyst and the polymer effect can becombined via binding the monomolecular catalyst in the polymer.

以苯乙烯为底物，反应条件下环氧化ee值可达60％，这是迄今为止非酶催化剂得到的最好结果。

A highly sensitive fluorescence method for the determination of germanium based on the formation of Ge- morin complex has been developed.

在H3PO4介质中锗与桑色素反应生成配合物，使溶液的荧光明显增强，据此建立了测定微量锗的荧光分析新方法。

The nicotinamide coenzymes can undergo reversible oxidation-reduction reactions with specific substrate s in the presence of the appropriate dehydrogenase.

在有适当的脱氢酶时烟酰胺可以对特定的底物进行可逆的氧化-还原反应。

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。