General selection method of keywords or subject words:

After writing the paper, the author chooses the information or vocabulary that can express the main content of the paper. These residences or words can be found and selected from the title of the paper and the content of the paper. For example, select six keywords, of which the first three are selected from the topic of the paper and the last three are selected from the content of the paper.

The selection of the last three keywords supplements the main content information that the title of the paper fails to express, and also improves the conceptual depth involved. Need to choose, together with the keywords selected from the title, to form the keyword group of this paper.

Extended data

Writing requirements

1, title;

2. Author's name and unit;

3. Abstraction;

(1) The purpose and importance of this study;

(2) the main content of the study, which shows what has been done;

(3) The basic conclusions and research results highlight the originality of the paper;

(4) the significance of the conclusion or result.

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