软件应用程序必须满足不同的涉众需求，因此描述这些系统的模型也一定具有复杂性。
Software applications must satisfy a diverse set of stakeholder needs, and consequently, the models describing these systems must likewise be complex.
通过分析系统必须满足的需求和约束条件，我们可以很方便地开发一些模型去呈现系统。
We facilitate the development of models that represent systems based on the analysis of requirements and constraints that the system must fulfill.
这将扩展典型的迭代式开发模型以包括发行的需求规范及其系统测试。
This would extend the typical developers' model of iterative development to include the requirements specification of the release and its system testing.
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