Count, not more than 10% of the total number of words. The standards of each duplicate checking system are different. Schools generally use the HowNet duplicate checking system, and the test results on Wanfang can only be used as a reference.

Basic rules for duplicate checking of papers:

1. Dismantling several different papers and combining them, or submitting a paper for many times, will generally be detected as duplication and will be regarded as plagiarism. Of course, if only a few words and sentences are extracted, the impact will not be great.

2. Excerpting long paragraphs and verbatim, or just changing a few words or words and putting chapters of other articles in your own paper, are usually detected as plagiarism.

3. If you want to quote the material of other papers into your own paper, but the quotation format is not marked correctly, it may be detected as plagiarism.

Matters needing attention in paper duplicate checking:

Citing or referring to other people's documents is the key to the duplicate checking rule of papers, so we must pay attention to the number of words used. Generally speaking, the references cited and marked in the paper also need to be controlled, otherwise the repetition rate will be calculated. I believe that through the above specific introduction, everyone knows the rules of duplicate checking, so after mastering this rule, you must not violate these rules when writing a paper.

The modification in this respect must be completed before duplicate checking. It should be reminded that some free duplicate checking software is not credible, which not only has a bad influence, but also may reveal the contents of the paper. I'll lose it because of small things.