This article introduces the research's background, purpose and significance, as well as research methods and research contents, and reviews related documents.
主要介绍本文的研究背景、研究目的和意义以及研究方法和研究内容，并对相关文献进行综述。
The main content of this paper is as follows: The first part is introduction, it simply introduced the background of the research papers, research purposes, research methods and research contents.
论文的主要内容如下：第一部分绪论，主要对论文的研究背景、研究目的和意义、研究方法以及研究内容做简单的阐述。
In dissertation, the first section was preface, including research background, purpose, significance, contents and the creative methods of the research.
本文第一章是引言，主要包括研究背景、研究目的、研究意义、研究内容，并指出了论文的研究方法。
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