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Na-montmorillonite was modified with different quaternary phosphonium salts using ion-exchange method,and the structures and property of modified montmorillonite were studied.

采用离子交换法将不同的季鏻盐交换到钠基蒙脱土的层间得到改性蒙脱土，并对改性蒙脱土的结构和性能进行了研究。

College of Environment and Energy Engineering, Beijing Polytechnic University, Beijing 100022, China ）Abstract The phosphoryl N → O migration reaction and ester exchange reaction on phosphorus of phosphoserine with methyl alcohol involving hexa-coordinate phosphorus intermediate 3 had been studied by MNDO method.

用MNDO方法对磷酰化丝氨酸仿生化反应机理中所形成的六配位磷中间体(3)可能的3个异构体的结构及其反应活性进行了研究。

The phosphoryl N→O migration reaction and ester exchange reaction on phosphorus of phosphoserine with methyl alcohol involving hexa-coordinate phosphorus intermediate 3 had been studied by MNDO method. The three isomers structures of 3 were discussed in detail based on the calculation results.

谭波用MNDO方法对磷酰化丝氨酸仿生化反应机理中所形成的六配位磷中间体(3)可能的3个异构体的结构及其反应活性进行了研究。

The date and time picker control provides a simple interface to exchange date and time information with a user.

日期和时间选择器控制提供了一个简单的接口与用户交流的日期和时间信息。

Donor bacteria, through its pilus bacteria with receptors contact, the former transmission of different length single strand of DNA to the latter, and in the latter cells for double-stranded or further nuclear chromosome in exchange, integration, so that the latter was the donor of the genetic traits phenomenon.

供体菌通过其性菌毛与受体菌相接触，前者传递不同长度的单链DNA给后者，并在后者细胞中进行双链化或进一步与核染色体发生交换、整合，从而使后者获得供体菌的遗传性状的现象。

It was a friendly encounter with exchange of pleasantry.

我们彼此友善的互相招呼及交流。

Compared with the results of infrared polarimetry measurement,common polarimetry measurement and Ion exchange chromatography measurement,we can preliminary found that the accuracy of Near Infrared polarimetry measurement is better than common polarimetry measurement.

就糖厂中间制品的蔗糖分用近红外旋光法和普通旋光法进行了测定，并且引入离子色谱法测定作为评判，对比分析，初步得到近红外旋光法较之普通旋光法的测定准确度要高的结论。

Politburo members would be there, and occasionally would exchange a word or two with reporters.

政治局成员会出现在那里，偶尔跟记者交谈一两句。

Instead of a friend in a post chaise or in a carriage, to exchange good things with,and vary the same stale topics over again,for once let me have a time free from manners.

我不愿坐在驿站或马车里跟一个朋友互致问候，然后就些个陈腐不堪的话题颠来倒去地聊个没完。

It also has a forum which lets you post your question and exchange your opinoins with other members.

它也有一个论坛供大家发布信息交流经验。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。