The ratio of 2 1 1 mechanical graduate students in University of Science and Technology Beijing is about 2: 1, so it can be said that the enrollment ratio is quite low. As mentioned above, we can see three important messages. First, the number of graduate students enrolled in University of Science and Technology Beijing is small, only 30 to 40. Second, the difficulty of specialized courses in University of Science and Technology Beijing is relatively low, and it is easy to get high marks. Third, it is not easy to get high marks in the second interview.