本系统叫做研究生导师双选系统，主要实现学生、导师、管理员信息的增删改查操作，以及学生选导师、导师选学生、学科专业信息维护的功能。(This system is called the Postgraduate Tutor double selection system, which mainly realizes the information of students, tutors, administrators, and changes, as well as the functions of