This text introduces the relevant knowledge of the resonance theory, and the application in chemistry do the system expatiates.
介绍了共振论的有关知识，并对其在化学方面的应用做了系统的阐述。
The paper expatiates the concepts and characteristics of invisible web, expatiates the reason of its forming in the information navigation system.
文章阐述了隐蔽网络资源的概念和特点及在信息导航中隐蔽网络形成的原因。
This paper finally expatiates the process of the design and implement of this system.
最后，文章对系统的设计实现过程进行了阐述。
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