Chinese topic of graduation thesis (font: bold, font size: small two, bold, centered. Paragraph: the first two lines of the paragraph and the last two lines of the paragraph. The line spacing is fixed at 23 pounds. Style: Title+Bold. There is an empty line below.

Abstract (font: bold, centered, font size: No.3, paragraph: 0.5 line after the paragraph and 0 before the paragraph. )

Abstract text? (Font: Song Dynasty, font size: No.4 ... Paragraph: left-aligned, the first line is indented by 2 characters, and the line spacing is 1.5 times. An abstract of about 300 words should briefly explain the content, purpose, experimental methods, main achievements and innovations of the graduation thesis (design). There is an empty line below.

Extended data 1) Through the analysis of the cited literature, it points out the existing research gaps to put forward new topics and explain the frontier or pioneering nature of the topics;

2) Through the analysis of the cited documents, point out the problems or defects existing in their research work, and explain the new research contents of the cited documents-or the research emphasis and breakthrough point are different, or the research methods are different, or further supplement and improve the arguments and arguments, or make new explanations to explore their new academic value and popularization and application value;

3) Take the opinions, theories or results of investigation, experiment, calculation and observation (facts and data) cited in the literature as arguments, evidences or premises for this paper's argumentation, analysis and elaboration;