First of all, the originality of the paper is one of the core requirements of duplicate checking. When writing graduation thesis, graduate students need to analyze and study problems independently, and can't copy other people's published papers or research results. In addition, academic integrity also requires authors to respect the intellectual property rights of others and not to use unauthorized achievements of others. This means that the graduation thesis should be original research and not contain unauthorized references.

Secondly, schools or periodicals usually have restrictions on the results of duplicate checking, requiring that the proportion of duplicate checking should not exceed a certain threshold, such as 10%. This means that the similarity comparison results of graduate papers cannot exceed the specified percentage, otherwise it may be considered plagiarism.

In addition, graduate papers should be cited according to the standard citation format to ensure the accuracy and standardization of citation. The documents cited in the paper should include a complete list of quotations and be marked in the paper for readers' verification. This not only reflects the academic attitude, but also helps to ensure the credibility and verifiability of the paper.

Finally, the graduate thesis needs to use the designated duplicate checking system to compare the text similarity. These systems can help detect the originality and plagiarism of papers, and ensure that papers meet academic ethics and the requirements of schools or journals.

To sum up, the requirements for duplicate checking of engineering master's thesis include originality, academic integrity and intellectual property rights, repeated publication and translation, proportion, citation standardization and duplicate checking system. Graduate students should write papers and check duplicates in strict accordance with these requirements to ensure the quality and academic integrity of papers and maintain the authenticity and credibility of academic research.