前言介绍论文选题意义、前人研究成果及论文新意。
Introduction description the significance of topics, previous research results and the innovative of this thesis.
引言部分，简要回顾研究对象的历史状况，并介绍论文选题意义和研究价值。
The introduction part briefly reviews the history of the research, object and introduces the significance of the thesis's selected topic and the value of the research.
论文第一部分为引言部分，介绍本论题的选题背景和依据、论文选题意义、论文选择的重点难点以及论文研究方法。
Thesis part I is a foreword part, introducing the background and significance, the thesis topic, the key, the difficulties and research methods.
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