目 录 目 录 .............................................................................................................................................. 1 1 引言 ............................................................................................................................................... 2 1 .1 编写目的 ............................................................................................................................. 2 1 .2 背景 ..................................................................................................................................... 2 1 .3 定义 ..................................................................................................................................... 2 1 .4 参考资料 ............................................................................................................................. 2 2 任务概述........................................................................................................................................ 3 2 .1 目标 ..................................................................................................................................... 3 2 .2 用户的特点 ......................................................................................................................... 3 2 .3 假定和约束 ......................................................................................................................... 3 3 需求规定........................................................................................................................................ 3 3 .1 对功能的规定 ..................................................................................................................... 3 3 .2 对性能的规定 ..................................................................................................................... 4 3 .2 .1 精度 ....................................
