功能需求是系统所做的事情。
非功能性需求是质量属性或系统如何设计、构建或实现的方面。
看一下：
https://softwareengineering.stackexchange.com/questions/71621/what-is-the-difference- Between-a-non-function-requirement-and-a-quality-attrib
Functional requirements are things the system does.
Non-functional requirements are quality attributes or aspects of how the system is designed, built or implemented.
Have a look at:
https://softwareengineering.stackexchange.com/questions/71621/what-is-the-difference-between-a-non-functional-requirement-and-a-quality-attrib
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功能需求是系统所做的事情。
非功能性需求是质量属性或系统如何设计、构建或实现的方面。
看一下：
https://softwareengineering.stackexchange.com/questions/71621/what-is-the-difference- Between-a-non-function-requirement-and-a-quality-attrib
Functional requirements are things the system does.
Non-functional requirements are quality attributes or aspects of how the system is designed, built or implemented.
Have a look at:
https://softwareengineering.stackexchange.com/questions/71621/what-is-the-difference-between-a-non-functional-requirement-and-a-quality-attrib