Are1to30 numbers or names arrays or references that contain numbers for which you want the harmonic mean!

用来计算调和平均数的1到30个数值，或者是涉及数位的名称、阵列或引用。！

Are1to30numbers or names arrays or references that contain numbers for which you want the harmonic mean !

用来计算调和平均数的1到30个数值，或者是涉及数字的名称、数组或引用。！

The research for the means has a long history, the classical means include algebraic mean, geometric mean and harmonic mean etc.

平均数理论研究的历史久远，经典的平均数包括算术平均，几何平均，调和平均等。