There are a few sentences that can be quoted directly from the original text. It depends. Be careful not to misinterpret the will. It is better to quote others' words and process them moderately.
The introduction of the paper is as follows:
Nowadays, papers are often used to refer to articles that conduct research in various academic fields and describe academic research results, which are referred to as papers for short. It is not only a means to discuss problems in academic research, but also a tool to describe academic research results in academic exchanges. Including academic papers, graduation papers, dissertations, scientific papers, achievement papers and so on.
Keywords are selected from the title, abstract and text of the paper, which are words with substantial meaning to express the central content of the paper. Keywords are words used by computer systems to index the content characteristics of papers, which are convenient for information systems to collect and provide readers with retrieval. Generally, 3-8 words are selected as keywords for each paper, and a new line is set at the bottom left of the "abstract".
All relevant parts of the paper were copied out. After inspection, there is no problem. Put it in the book and add a cover. The cover of the paper should be concise and generous, and the title, school, department, instructor's name, author's name and completion date should be written. The author's name of the thesis topic must be written on the skin of Tai Maoying, not on the supplementary page inside.
With the rapid development of computer technology and Internet, online query, retrieval and download of professional data has become an important means of scientific and technological information retrieval. For all kinds of full-text databases or abstract databases on the Internet, abstract index is an important tool for readers to retrieve documents, which provides convenience for the construction and maintenance of scientific and technological information literature retrieval databases.
It is a comprehensive introduction to the paper, so that people can understand the main contents of the paper. After the paper is published, the abstract can be directly used by abstract magazines or various databases without modification or slight modification to supplement the deficiency of the title, thus avoiding misunderstandings, deficiencies and even mistakes that may occur when others compile the abstract. Therefore, the quality of abstracts directly affects the retrieval rate and citation frequency of cupboards.