Theoretical derivation indicates that time averaged three-order cumulant of signals, which are from(random) phase harmonic processes, is nonzero and its one-dimension slice is also a harmonic process.

理论推导表明，随机相位谐波过程时间平均三阶累积量为非零值，而且其一维切片仍然是谐波过程。

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Adopting the reactive circuit of twice harmonic to process the sensor signal, the system is closed loop.

对传感器信号处理采用的二次谐波反馈电路，电路为闭环系统。

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During the process of the identification for the fourth harmonic point, the usage of any element will not affect its uniqueness.

在第四调和元素的确定过程中，任意元素的用法是不影响第四调和元素的唯一性的。

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