Higher education classifies scientific knowledge, and this classification unit of scientific knowledge is called discipline. Subjects are graded vertically, the highest level is "door", the second level is "level 1", the third level is "level 2", and so on. The disciplines are horizontally divided into 12 categories, such as science, engineering, agriculture, medicine, literature, history, philosophy, economics, management, law, teaching and military. For example, "engineering" is engineering, and there is a first-class discipline under engineering, such as "electrical engineering and its automation"; The first-level discipline is divided into two disciplines: power system and its automation, high voltage and insulation technology, motor and electrical appliance, electrical theory and new technology, power electronics and electric drive.
Among the two disciplines, undergraduate education offers majors and postgraduate education offers disciplines. Undergraduate professional education is different from postgraduate discipline education. The difference is that postgraduate education takes discipline education as the teaching unit, while undergraduate education takes discipline and vocational education as the teaching unit. Postgraduate education pays more attention to scientific research, while undergraduate education pays more attention to vocational education. What they have in common is that they are all related to the same or similar disciplines. In other words, each discipline of undergraduate education corresponds to one or several disciplines of postgraduate education, and it is a bridge for undergraduates to enter postgraduate education after graduation, which also points out that the professional catalogue of undergraduate education is not exactly the same as that of postgraduate education.
People often refer to the discipline with the right to train master students as "master program" and the discipline with the right to train doctoral students as "doctoral program". It is also because majors and disciplines are interlinked. If the backbone of this major has a master's degree in both disciplines, people say that this major has a master's degree; If both disciplines, the backbone of this major, have doctoral programs, people say that this major has doctoral programs.
Therefore, it is generally cultivated according to large categories of enrollment. Undergraduate courses are generally not majors, but are all electrical engineering automation. You can choose your direction freely when you take the postgraduate entrance examination. Of course, some schools will enroll students according to two disciplines, but this situation is relatively rare.