软件开发生存周期
software development lifecycle
缩写：SDLC
中文定义
在软件开发的每个阶段所做的活动，以及这些活动怎样按照逻辑和时 间顺序关联到其它活动的。 缩写： 缩写：
English Definition
The activities performed at each phase in software development, and how they relate to one another logically and chronologically.