It proposes a question, discusses the theory background of the topic, and then introduces meaning of practice, research methods and frame of the article.
对问题的提出、研究此课题的理论背景和实践意义、研究方法和本文的基本框架进行了论述。
The text is divided into five parts:the first part is introduction, which explains the research background and status of the topic and then expounds the significance of the research.
全文共分为五个部分：第一部分为绪论，概述问题提出的背景、研究现状，阐明本课题的研究意义。
This dissertation firstly describes the background and situation of this topic, and then grasps the meaning of this share of design.
本文首先对本课题背景和国内外研究现状作了阐述，继而明确了完成本毕业设计的目的与意义。
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