In this paper, a simple rule for the harmonic mean and the arithmetic mean was given.

给出了应用调和平均数与算术平均数的简单规则。

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，或者是涉及数字的名称、数组或引用！

Some Matrix version of Geometric-Arithmetic mean inequality and Geometric-Harmonic mean inequality are obtained.

得到了几何—算术平均不等式和几何—调和平均不等式的一些矩阵形式。

After analysing, it is found that the harmonic mean method is a simple and quick method for strain calculation when the strain is great enough.

经分析发现当应变足够大时，调和平均值法是一种简单快速的应变计算法。

Based on the measurement of the contact Angle of differently treated ITO, the surface energy and polarity were calculated using the harmonic mean method.

在测量ito接触角的基础上，应用调和平均法计算了不同表面处理ITO阳极的表面能和极性度。