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动和静是事物状态表现的两个侧面,在数学中,一方面动和静在一个参照系统中是相对的,可以互相转化的;另一方面,对于同一事物
Moving and static are two aspects of the state of things. In mathematics, dynamics and statics are relative in a reference system and can be transformed into each other; on the other hand, the same thing