Paper duplicate checking mainly includes the following contents:

1. The text of the paper, including title, abstract, text, references, etc.

2. The original statement, including the purpose, subject and time of the statement.

3. Copyright statement, including: copyright owner, nature of copyright, geographical scope of copyright, term of authorized use of copyright, term of copyright protection, etc.

4. Chinese and English abstracts, including: objectives, methods, results and conclusions.

5. Icon naming and formula explanation.

6. References, including the author, title, publication name and publication date of the cited documents.

Generally speaking, paper duplication checking is a strict academic inspection, which aims to ensure the originality and legitimacy of papers and avoid plagiarism.