论文的绪论部分介绍了选题背景、研究内容、研究综述和研究方法。
The introduction part covers the background, content, sketch and method of the study.
第一部分介绍了论文的选题背景、写作意义和研究方法。
The first part introduced the research background, significances and method.
第一部分介绍了论文的选题背景、写作意义和研究方法。
The first part introduced the research background, significances and method.
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