文件名称:2011080611251013
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引言
有很多种不同的生命周期模型用于软件的开发。软件开发的生命周期是以对软件的需求定义为起点，以对软件的正式验收作为终点。
-Introduction
There are many different kinds of software development life cycle model for. The software development life cycle is the demand definition of software as a starting point, in a formal acceptance of the software as the end point.
有很多种不同的生命周期模型用于软件的开发。软件开发的生命周期是以对软件的需求定义为起点，以对软件的正式验收作为终点。
-Introduction
There are many different kinds of software development life cycle model for. The software development life cycle is the demand definition of software as a starting point, in a formal acceptance of the software as the end point.
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