... harmonic mean particle diameter 调和平均粒径 harmonic mean value 调和平均値 harmonic mean distance 调和平均距离 ...
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In this paper, we give a condition for harmonic functions in the unit disk by invariant weighted area-mean-value property.
本文使用不变加权面积平均值性质刻画了单位圆盘内的调和函数。
This paper introduces the pulse wide modulation (PWM) based on minimum root-mean-square value of harmonic current of inverter.
介绍了逆变器谐波电流均方根值最小的脉宽调制(PWM)。
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