We have three conditions, F= so our criterion -- Vector field F equals .
有三个条件，因此我们的标准，向量场。
With these concepts, the state characteristics of the system law intruded by F-law, the recognition of the state characteristics, the recognition criterion and applications are all discussed.
利用这些概念，给出系统规律被F -规律入侵呈现的状态特征与对这些状态特征的识别、识别准则与应用。
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