Paper format requirements (paper title) Paper typesetting style (bold No.3) (subtitle) (no need to write) (song style No.3) (blank line) Abstract: Please bold the word "Abstract:" into small four bold. Please use the fourth style for the content. The top abstract is a brief statement of the content of the paper, which requires a brief description of the purpose, research method and final conclusion of the research work, focusing on the conclusion, and is an independent and complete essay. (between 300 and 500 words) Keywords: key typesetting; Requirements ("keywords:" are bold in small four. The content part is a small four-song style, and ""is used between words. "Interval", top case. Key words are the core research content of the paper (3-5) (blank lines). This is a part of the body. Please use small four-song style typesetting (except titles, figures and tables), and the line spacing is a multiple of 1.25 ... First, this is the first-class title (bold No.4). The first-level title is indented by 2 characters. Please use Chinese characters for all title serial numbers, and separate them with ",". Please refer to the label here when you encounter the following first-level title, and don't repeat it. (1) This is a secondary title (small No.4 bold). Please use Chinese characters in brackets for the second-level title, indented by 2 digits. Please refer to the label here when you encounter the following second-level title, and don't repeat it. 1. This is a three-level title (item 5 in bold). Please indent the three-level title to two digits with Arabic numerals. Please refer to the label here when you encounter the following three-level title, and don't repeat it. (2) This is a secondary title. Please refer to the label here if you encounter a secondary title, and don't repeat it. 2. Requirements for notes (1) Notes 1. Notes: Notes are mainly used to explain or explain the title, author and specific content of the article. The numbering sequence is represented by Arabic numerals in the circle, in the form of footnote 1, which is marked at the footer position of the current page, and each page is renumbered and sorted in turn. Three. Requirements for reference: the word "reference" is in small bold type No.4, and two lines are left blank in the text in the box in the upper left corner. Please use No.5 Song for the content of the reference, with the serial number [1], and leave a blank position of Chinese characters in the content and serial number. Please refer to the following examples for the specific arrangement order and style. Document title of the main person in charge [D]. Place of publication: publishing unit, page number of publication year (optional) Attachment: common literature category code M- common works C-collection of papers N- newspaper articles J- journal articles D- dissertation R- research report S- standard P- patent A- articles precipitated in the collection of papers DB/OL-