“harmonic mean”的概念、定义、翻译、参考文献-科学参考

单词	harmonic mean
释义	harmonic mean [här`män·ik `mēn] ^MATHEMATICS For n positive numbers x₁, x₂, . . ., x_n their harmonic mean is the number n /(1/x₁ + 1/x₂ + . . . + 1/x_n ).
随便看	primary sewage sludge primary skip zone primary standard primary storage primary stratification primary stratigraphic trap primary stress primary stress field primary structure primary submodule primary succession primary surveillance radar primary syphilis primary tectonite primary tissue primary transcript primary treatment primary voltage primary wave primary weapon primary winding primary xylem primase Primates prime

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