EA&UML日拱一卒-活动图::14.2.3.4 States（状态）（1）

英文原文来自UML2.5，作者提供中文翻译。 14.2.3.4 States（状态） A State models a situation in the execution of a StateMachine Behavior during which some invariant condition holds. In most cases this condition is not expli

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