non-functional requirements meaning in English

非功能性需求
功能性需求

Non - functional requirements research of cots components
组件的非功能需求研究
Non - functional requirements for the public - facing site
用于面向公众站点的非功用性需求
So , what are non - functional requirements
所以，什么是非功能性需求呢？
Non - functional requirements for the content management tool
用于内容管理工具的非功能性需求
Non - functional requirements might require a non - standard approach
非功能性需求可能需要非标准的方法

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