That speaks to a good development model and one well suited to an open source release.
也就是说，它采用了很好的开发模型，是一个合格的开源发行版。
This would extend the typical developers' model of iterative development to include the requirements specification of the release and its system testing.
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。
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