目 录1 引言...............................................................................................................................................21.1 编写目的................................................................................................................................21.2 背景........................................................................................................................................21.3 定义........................................................................................................................................21.4 参考资料................................................................................................................................22 任务概述.......................................................................................................................................32.1 目标........................................................................................................................................32.2 用户的特点.............................................................................................................................32.3 假定和约束.............................................................................................................................33 对需求的规定................................................................................................................................43.1 对功能的规定.........................................................................................................................4系统功能详细列表..................................................................................................................43.2 对性能的规定.........................................................................................................................73.2.1 精度................................................................................................................................
