对软件成本估算方法进行合理评价，进而从当前众多软件成本估算方法中选择最合适的一种是十分重要的。
It is very important to evaluate software cost estimation method reasonably and subsequently select the most suitable one from current lots of software cost estimation methods.
软件规模度量是估算软件项目工作量、成本和合理策划项目进度的基础。
Software size measurement is the base of effort estimation, cost estimation and project plan.
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