介绍了文章的选题背景与意义、研究进展、研究内容，研究的主要思路、方法、技术路线及相关理论基础。
Preface. In this part the background, the significance, the current condition, the content, the outline, the methods, the technique employed, and relative theories are introduced.
第1章提出论题，界定研究对象与范围并对相关研究及本文所采用的研究方法与技术路线加以介绍。
Chapter 1 raise the issue and define the objects and their scopes, and then, introduces the methods of research and the technical path.
第1章提出论题，界定研究对象与范围并对相关研究及本文所采用的研究方法与技术路线加以介绍。
Chapter 1 raise the issue and define the objects and their scopes, and then, introduces the methods of research and the technical path.
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