Research Article
[Retracted] Building English Audio-Visual and Oral Mobile Teaching System Based on Virtual Augmented Reality Technology
Table 4
Use case description of teachers applying for courses.
| Use case name | Teachers apply for courses |
| Range | Use of teacher application course module | Level | User purpose | Major participants | Teacher | Relevant personnel and concerns | Concerns of relevant personnel | Teachers hope to correctly submit their applied courses and apply for open courses | Preconditions | Teachers can log in to the system correctly and legally | Guarantee of success | All correct data can be saved in the database. |
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