Firstly, the author worked on the requirement Analysis, and got the functional requirement, data flow diagrams and data dictionary.
首先对开发系统进行了需求分析，得到了功能需求，数据流图和数据字典。
Firstly, the author worked on the requirement Analysis, and got the functional requirement, data flow diagrams and data dictionary.
首先对开发系统进行了需求分析，得到了功能需求，数据流图和数据字典。
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