目录1.导言...............................................................................................................................................21.1 目的....................................................................................................................................21。2 范围.................................................................................................................................21。3 背景.................................................................................................................................21。4 参考文献.........................................................................................................................21.5 版本更新信息.....................................................................................................................22．系统定义....................................................................................................................................32。1 项目背景.........................................................................................................................32.2 项目要达到的目标.............................................................................................................32。3 系统整体结构..................................................................................................................33. 系统运行环境..............................................................................................................................43.1 硬件环境............................................................................................................................43。2 软件环境.........................................................................................................................44。功能规格....................................................................................................................................54。1 角色(Actor）定义..........................
