正文三章
Three Chapters of the main text
以上为机器翻译结果，长、整句建议使用 人工翻译 。
文章主要包括前言和正文三章。
The article includes the foreword and three chapters.
youdao
本文共分绪论和正文三章组成。
This thesis is composed of four chapters.
论文分为五个部分：导论，正文三章及结论。
The thesis consists of five parts: the introduction, three main chapters and the conclusion.
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