Logical Constants

A logic system is related to the empirical experience of daily language and thinking in a very indirect way , by means of the explanation of logical constants within the system .

通过其所含逻辑常项的解释，逻辑系统与关于日常语言和思维实践的经验发生十分间接的联系。

For better support of iterations and logical constants among activities , a child model of logical iteration structure tree was proposed based on the current research of process simulation method . In this model , topological relationships among activities were represented by tree structure .

为更好地支持活动间迭代与逻辑约束关系，提出用于表达活动迭代关系的逻辑迭代结构树子模型，用树结构表达活动间的各种拓扑关联。