"First-level discipline and two disciplines" means that the first-level discipline includes several two disciplines, and two disciplines is the major to apply for. Schools with first-class disciplines can set up their own majors in two disciplines.

First-level discipline In the postgraduate education system of colleges and universities, the first-level discipline is a major discipline, and the second-level discipline is a sub-discipline under it. According to the revised version of 20 1 1, the first-level discipline 13 and the first-level discipline 1 10.

Specific introduction of national standard disciplines:

There are 5 categories of national standard disciplines, 58 first-class disciplines, 573 two disciplines disciplines and nearly 6,000 third-class disciplines. The order of categories is: A natural science, code110-180; B agricultural science, code 2 10-240.

Reference to the above content: Baidu Encyclopedia-first-level discipline