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.......................................................................................................................................22.1 目标........................................................................................................................................22.2 用户的特点.............................................................................................................................32.3 假定和约束.............................................................................................................................33 需求规定.......................................................................................................................................33.1 对功能的规定.........................................................................................................................33.2 对性能的规定.........................................................................................................................33.2.1 精度.................................................................................................................................33.2.2 时间特性要求.................................................................................................................
