But generally speaking, most colleges or journals require the repetition rate of English papers to be between 20% and 30%. Strictly speaking, the repetition rate should be between 5% and 10%. Especially sci papers, generally less than 20%. Strictly speaking, it may be required that the duplicate checking rate should not exceed 15%. If it is a top SCI journal, it is normal to require that the duplicate checking rate is not higher than 5%.
Regarding the requirements of duplicate checking rate of English periodicals, before submitting the selected periodicals, you can check in the submission guide of the submitted periodicals, which will generally clarify the requirements of duplicate checking rate of English papers.
If you are worried that the submitted English papers will exceed the specified duplicate checking standards, the author can also check the duplicates in advance, so that the parts with serious duplication can be revised to reduce the duplicate checking rate of the papers, and then submit them again, which may pass the duplicate checking audit of his own journals more smoothly. Finally, you can learn how to correct the high repetition rate of papers and effectively reduce the duplicate checking rate.