这学期学软件工程做的航空订票系统开发过程中的UML图，包括用例和状态，甘特图没找到，如果需要的话，请留言给我，我再-Learn to do this semester software engineering development process of aviation reservation systems in the UML diagrams, including the use of cases and the state, Gantt Chart not find, if necessary, please message to me, I would look for
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