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harmonic mean英英字典_harmonic mean剑桥英语解释_harmonic mean柯林斯英文解释_果味酸柯林斯词典
果味酸柯林斯词典

harmonic mean

H 开头单词

柯林斯词典

    harmonic mean

  • 1. N the reciprocal of the arithmetic mean of the reciprocals of a set of specified numbers: the harmonic mean of 2, 3, and 4 is 3( + + )–1 = 3 调和平均值

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