对开展本论文研究的背景及意义、国内外研究现状等做了描述。
To carry out this study on the background and significance, status, etc. was described.
文章的第一章概括地介绍了该项目的研究背景及国内外研究现状。
In first part we summarize the background and the development of this project.
第一部分主要介绍本研究的背景及研究现状。
In the first part, there is the introduction of the background of this study.
第一章，简述了本论文的选题背景及国内外研究现状。
The first chapter Outlines the research background of this thesis and research status.
第一章，简述了本论文的选题背景及国内外研究现状。
The first chapter Outlines the research background of this thesis and research status.
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