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单词
harmonic mean
释义
harmonic mean
[här`män·ik `mēn]
MATHEMATICS
For
n
positive numbers
x
1
,
x
2
, . . .,
x
n
their harmonic mean is the number
n
/(1/
x
1
+ 1/
x
2
+ . . . + 1/
x
n
).
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更新时间:2026/1/11 12:18:26