Conventional software process models have many disadvantages such as low development efficiency, bad portability and small reusable granularity.

传统的软件过程模型存在开发效率不高，可移植性差，重用粒度小等缺点。

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Presently the main software process models are waterfall model, V-Shape model, incremental model, spiral model, rapid prototype model and parallel model.

目前的软件过程模型主要有线性模型、V模型、增量模型、螺旋模型、原型模型和并行网络模型。

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In this scenario, a full software development lifecycle cost analysis is not required, but you should keep an eye on the capability-maturity models (CMM) of the process if you can.

这种情况下不需要完整的软件开发生命周期成本分析，但是如果可能的话应关注此过程中的能力成熟度模型(CMM)。

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