本文件: -指定在工程活动中实施的所需过程，这些过程会在整个生命周期内产生对系统和软件产品（包括服务）的需求； -提供应用ISO/IEC/IEEE 15288和ISO/IEC/IEEE 12207中描述的要求和要求相关过程的指南； -指定通过实施需求过程产生的所需信息项； -指定所需信息项的所需内容； -提供所需和相关信息项的格式指南。 本文件适用于: -在涉及人造系统、软件密集型系统、软件和硬件产品以及与这些系统和产品相关的服务的项目上使用或计划使用ISO/IEC/IEEE 15288和ISO/IEC/IEEE 12207的人，无论项目范围、产品、方法、规模或复杂性如何； -执行需求工程活动以帮助确保其应用的需求工程过程符合ISO/IEC/IEEE 15288和/或ISO/IEC/IEEE12207的任何人； -在涉及人造系统、软件密集型系统、软件和硬件产品以及与这些系统和产品相关的服务的项目上使用或计划使用ISO/IEC/IEEE 15289的人，无论项目范围、产品、方法、规模或复杂性如何； -执行需求工程活动以帮助确保在应用需求工程过程中开发的信息项符合ISO/IEC/IEEE 15289的任何人。

This document: — specifies the required processes implemented in the engineering activities that result in requirements for systems and software products (including services) throughout the life cycle; — provides guidelines for applying the requirements and requirements-related processes described in ISO/IEC/IEEE 15288 and ISO/IEC/IEEE 12207; — specifies the required information items produced through the implementation of the requirements processes; — specifies the required contents of the required information items; — provides guidelines for the format of the required and related information items. This document is applicable to: — those who use or plan to use ISO/IEC/IEEE 15288 and ISO/IEC/IEEE 12207 on projects dealing with man-made systems, software-intensive systems, software and hardware products, and services related to those systems and products, regardless of the project scope, product(s), methodology, size or complexity; — anyone performing requirements engineering activities to aid in ensuring that their application of the requirements engineering processes conforms to ISO/IEC/IEEE 15288 and/or ISO/IEC/IEEE12207; — those who use or plan to use ISO/IEC/IEEE 15289 on projects dealing with man-made systems, software-intensive systems, software and hardware products and services related to those systems and products, regardless of the project scope, product(s), methodology, size or complexity; — anyone performing requirements engineering activities to aid in ensuring that the information items developed during the application of requirements engineering processes conforms to ISO/IEC/IEEE 15289.