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 用途 ............................................................................................................................................... 2 2 .1 功能......................................................................................................................................... 2 2 .2 性能......................................................................................................................................... 3 2 .2 .1 精度 .................................................................................................................................. 3 2 .2 .2 时间特性 .......................................................................................................................... 3 2 .2 .3 灵活性 .............................................................................................................................. 3 2 .3 安全保密 ................................................................................................................................. 3 3 运行环境 ....................................................................................................................................... 3 3 .1 硬设备.....
