切片方法删除了与待验证性质无关的层次和并发状态，缓解了空间爆炸问题，并且有助于模型的分析和理解。
Slicing can remove the irrelevant hierarchies and concurrent states to the property, reduce the state space, and help analyzing and understanding the models.
给出了嵌入式软件设计中常用的UML并发状态图到B抽象模型的转换规则。
The rules of transforming from UML state machine into B abstract machine are provided.
模型检验是自动检验有限状态并发系统的技术。
Model checking is a technique for automatically verifying finite-state concurrent systems.
组合可达性分析是对并发系统模型分析验证的基础和关键，但是难于解决验证中的所谓的状态爆炸问题。
Model checking and refinement checking are two approaches to formal verification, whose difficulties are due to the state explosion problem.
组合可达性分析是对并发系统模型分析验证的基础和关键，但是难于解决验证中的所谓的状态爆炸问题。
Model checking and refinement checking are two approaches to formal verification, whose difficulties are due to the state explosion problem.
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