产品范围说明书。
产品范围说明书说明了项目应创造的产品、服务或成果的特征。
Describes the characteristics of the product, service, or result that the project was undertaken to create.
这些特征通常在早期阶段不够详细，而在以后的阶段，随着产品的特征逐步明确，产品范围说明书也就逐步详细起来。
These characteristics will generally have less detail in early phases and more detail in later phases as the product characteristics are progressively elaborated.
项目产品技术要求说明书的逐步完善务必要与项目范围的恰当定义谨慎地协调起来，在项目是按合同实施时，尤其应当如此。
Progressive elaboration of a project's specifications needs to be carefully coordinated with proper project scope definition, particularly if the project is performed under contract.
如果项目范围即需要完成的任务，规定得恰如其分，则即便是在产品技术要求说明书的逐步完善过程中，项目范围仍应保持控制状态。
When properly defined, the scope of the project-the work to be done-should be controlled as the project and product specifications are progressively elaborated.
如果项目范围即需要完成的任务，规定得恰如其分，则即便是在产品技术要求说明书的逐步完善过程中，项目范围仍应保持控制状态。
When properly defined, the scope of the project-the work to be done-should be controlled as the project and product specifications are progressively elaborated.
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