Some projects need a nice, steady, low-voltage pulse at a constant rate.

一些工程项目需要一个稳定可靠并固定频率的低电压脉冲。

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This effect can be measured in either the time domain by observing the rate of decay of voltage or in the frequency domain by measuring phase shifts between sinusoidal currents and voltages.

这个效应可以在时间域通过观测电压的衰变率来测量，也可以在频率域通过正弦电流和电压之间的相变来测量。

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"Frequency" just means the rate at which air molecules go back and forth, or a voltage fluctuates, and it can be represented as the rate at which a regular squiggle goes up and down.

频率“通常是指空气粒子来回运动的速率或者电压的波动，所以它能代表一个规则波形曲线上下波动的节律。”

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The best results of all are obtained when the response to one burst of stimuli is used to regulate the rate and voltage of the next.

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