1, research limitations: the number of samples selected in this paper is small, and the group source is single, which may have certain limitations, so it is necessary to further expand the research scope and sample size.
2. Insufficient research: There may be some defects or deficiencies in the research methods in this paper, such as errors in data collection and processing in the research process, and the methodology needs to be further improved.
3. Research defects: Some conclusions of the paper are insufficient or need further verification, and some conclusions and applications still have certain limitations and defects.