从需求目录中选择和评估已定义系统的需求。为计划和实施的项目开发了需求档案。对于复杂的系统，性能规格中规定了需求概况。
Requirements for a defined system, selected and evaluated from the requirements catalogue. Requirements profiles are developed for projects to be planned and implemented. For complex systems the requirements profiles are stipulated in performance specifications.
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