软件需求分析：在软件的整个生命周期中，首先是软件计划期，接着是软件开发期，软件需求分析是软件开发的第一个阶段，也是关系到软件开发成功与否的关键一步。-Software Requirements Analysis: In the software throughout the life cycle, the first software planning period, followed by software development phase, software requirements an