在UML中，活动被用来对不同种类的流程建模：信号流或数据流，也有算法流或过程流。
Activities in UML are used to model flows of various kinds: signal or data flows, as well as algorithmic or procedural flows.
在流程建模过程中命名活动时需要注意这一点（引用活动的名称而不是显示名称）。
This is something you have to bear in mind when you are naming the activities during process modeling (referring to the name and not the display name of an activity).
需要建立标准的机制或语言，在业务流程建模过程中使用这些机制或语言建立的模型，在系统设计和实现过程中会更容易加以利用。
A standardized mechanism or language needed to be devised by which the artifacts created during business process modeling could be more readily used during the system design and implementation.
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