1, according to the query of China Education Network, the purpose is different: the pre-defense is to improve and modify the paper, and the formal defense is to show the research results.
2. Different participants: Only the tutor and the author participated in the preliminary defense, and many experts and tutors participated in the formal defense.
3. The defense requirements are different: the preliminary defense requirements are relatively low, and the formal defense requirements are higher.
4. Defense refers to a form of submitting a written report or answering questions after attending a meeting or completing a task. In academic circles, defense refers to the defense of graduation thesis, that is, after completing the graduation thesis, students need to show their research results to experts or professors, answer questions, and accept evaluation and guidance.