规格化 Functional specification
（重定向自Functional specifications）
规格化（specification）指不同厂商制作相同或相似产品时的格式统一。
例如USB传输就是规格化的例子。
Functional specifications
中文百科
英语百科
Functional specification 规格化
（重定向自Functional specifications）
![Systems engineering model of Specification and Levels of Development. During system development a series of specifications are generated to describe the system at different levels of detail. These program unique specifications form the core of the configuration baselines. As shown here, in addition to referring to different levels within the system hierarchy, these baselines are defined at different phases of the design process.[1]
Note: There is one minor (and ironic) typo in the image above. SI&T is System Integration and Test not System Integration and TEXT.](/uploads/202501/14/Specification_and_Levels_of_Development5341.jpg)
A functional specification (also, functional spec, specs, functional specifications document (FSD), functional requirements specification) in systems engineering and software development is a document that specifies the functions that a system or component must perform (often part of a requirements specification) (ISO/IEC/IEEE 24765-2010).
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