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本文研究了具有零拓扑熵的图映射f的性质,证明了在任意有限f-不变的Borel 测度μ下,其攀援集的外μ-测度都是零.“,”In this paper,it is shown that any scrambled set of a graph map f with zero topological entropy has zero outer μ-measure,where μ is any finite and f-invariant Borel measure.