功能内聚指模块内所有元素共同完成一个功能，缺一不可，因此模块不能再分割。
... functional efficiency 职能效率 logical functional 逻辑内聚 ; 功能内聚 functional device 功能掐 ; ...
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领域是一个功能内聚的实体，如人力资源管理、财务、物流、销售、收购。
Domain level - a domain is a functional cohesive entity, like Human Resource Management, Finance, Logistics, Sales, Acquisition.
我们希望创建功能内聚的接口，一组操作由于其功能相关而聚合到一起。
We seek to create interfaces that are functionally cohesive, a set of operations that belong together because of their function.
如果你把这些功能合并到一个用例里，就成为低内聚的(和不合适的)依赖关系。
If you were to combine these functions into a single use case, it would have low cohesion (and undesirable dependencies).
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