It is not common to write overhaul in the column of doctoral thesis achievements. Generally speaking, the results column is more used to list research results, publish academic papers, grant patents, win prizes and other achievements that have an important impact on academic research. Overhaul is relatively common, and it is usually not regarded as academic research results. Therefore, it is suggested that the achievements directly related to academic research should be listed in the achievements column, and the maintenance information should be placed in other columns, such as professional background, training experience or other additional information columns. This is more in line with academic habits and norms.