The calculated error can be in one of two partitions about the desired accuracy, a feature of the structural design for the unit, which is not apparent from a purely functional specification.

错误可能是在二类划分的当中一个中关于准确性，结构设计的特点为单元，不是明显的从一个单纯的功能规格。

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In some organizations requirements may end up in high level project plans, functional specification documents, in design documents, or in other documents at various levels of detail.

在一些公司中的项目计划中没有需求规格说明书了，而以功能需求文档，设计文档或者以其他不同形式描述需求。

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This system by the system administrator module, cashier module and a regular user modules, including functional requirements specification, database design, detailed design and so on.

本系统由系统管理员模块、收银员模块和普通用户模块组成，包括功能需求描述、数据库设计、详细设计等内容。

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