The preface of the paper is written in front? Or sum up first?

After writing the abstract, the format flow is probably as follows:

Summary of (Small Five in Black) (Small Five in Song Dynasty)

Keywords: (small five bold) Keyword content (small five song style)

China Library Classification Number: (small five bold) Document Identification Number: (small five bold)

0 Introduction (Bold Type 3)

Introduction (the fifth song)

1 Text Subtitle (Bold No.3)

1. 1 (Bold No.5) Text+Secondary Heading (Song No.5)

1. 1. 1 (Bold No.5) Text+Level 3 Title (Song Ti No.5)

Text content, banner (No.5)

Title (Song No.5)

Table Name (No.5) (Table is a three-line table)

References (small 5 bold)

Bibliography (No.5)

The type of reference (i.e., citation source) is identified by a single letter:

M- monographs, C- collections, N- newspaper articles, J- journal articles, D- papers, R- reports, S- standards, P- patents; For files that do not belong to the above types, use the letter "z" to identify them.