A, digital serial number level order is:

The first layer is Chinese characters, numbers and pause symbols, such as? One, two, three.

The second layer contains Chinese characters and numbers in brackets, such as (1), (2) and (3).

The third layer is Arabic numerals with footnotes, such as? 1.2.3.？ .

The fourth layer contains Arabic numerals in brackets, such as? ( 1)(2)(3)? .

The fifth floor is circled Arabic numerals, such as? ①②③? Or? 1)2)3)? .

The sixth floor is capitalized English letters, such as? Canadian Broadcasting Corporation? Or? (1) (2) (3)? .

The seventh layer is lowercase English letters, such as? Canadian Broadcasting Corporation? Or? (1) (2) (3)? .

Second, the text-level title serial number of scientific papers:

The titles of scientific papers at all levels can also be coded continuously with Arabic numerals, with dots (. ), there is no dot after the last digit. Like what? 1? ,? 1.2? ,? 1.2. 1? Wait; The serial numbers of titles at all levels are arranged in the upper left box, and the titles are arranged with a space after the last serial number. Like what? Measurement method? What is the title of article 2 in section 3 of chapter 5? Measurement method? .

Note: the titles of paragraphs at the same level should be consistent, and the numbers at the next level should be consistent. If there are fewer levels, you can omit some serial numbers in parentheses.

Three. The serial number of the figure, table, formula and formula in the text:

The serial numbers of figures, tables, formulas, formulas, etc. in this paper should be arranged in Arabic numeral order continuously, and their labeling forms should be easy to distinguish from each other, such as? Figure 1, Table 2, Formula (5)? Wait; Long research reports can also be coded in chapter (article) order, such as? Figure 2. 1, table 4.2 and formula (3.3)? By analogy, the previous number indicates the serial number of the chapter (article), and the latter number indicates the serial number of the charts and formulas in this chapter.