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2019-05-26View Original

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选择题:根据Π定理,对于某一流动现象,若影响该流动的物理量有n个,而在这些物理量中涉及到的基本因次有m个,则可将其组成( )个无量纲的函数关系。 A.n+m B.n+m+1 C.n+m-1 D.n-m 答案:D 提示:答案回复可见

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