第一部分：明确本论文研究背景、现状、目的、意义和研究方法。
Part I: a clear thesis of this research background, status, purpose, significance and research methodologies.
主要阐述论文研究背景和意义、国内外研究现状、研究框架与方法。
It mainly expatiates on the studying background, the significance of the study, domestic and international relevant research, the method and framework of this text.
第一部分为前言，主要阐明了论文研究背景、研究意义、思路与方法；
The first part is preface, on the basis of expounding the background, the purpose, the meaning and the thinking of the thesis study.
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