The final paper mainly consists of five parts: the preface of the first chapter introduces the origins of this paper, and makes the literature summary, thereinto makes the limits to several places.

本文主要由五个部分构成：第一章前言部分介绍了本文的选题缘由并作了文献综述，其中对几个名次做了剖析。

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The first chapter is preface, introducing the purpose and significance of the topics, the related profiles of the research topics, and the theory, methods, instructions related to the studies.

第一章绪论部分主要介绍了论文选题的目的和意义，选题相关的研究概况，以及本文研究的理论、方法和相关说明。

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