Each of the two has its own distinct lifecycle model.
两个过程有各自截然不同的生命周期模型。
However, Traditional software lifecycle model not completely suit COTS based system development and maintenance process.
然而，传统的软件生命周期模型不能完全适应基于COTS的软件系统的开发和维护。
Built upon this is the concept of a module lifecycle and a service model.
在此基础上应用了模块生命周期和服务模型的概念。
Figure 2: Spiral model of the software development lifecycle
图2：软件开发生命周期的螺旋模型
Improvements to the Monitor model lifecycle.
对Monitor模型生命周期的改进。
Improved Monitor model lifecycle.
改进的Monitor模型生命周期。
Improved Monitor model lifecycle.
改进的Monitor模型生命周期。
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