The voltage in the signal varies in direct proportion to the sound wave.
信号中的电压按声波比例变化。
The voltage requires being smooth and stable sine wave.
其工作电压要求是平滑而稳定的正弦波。
Super power grid compensation capacity, resist the voltage wave of power grid.
超强的电网补偿能力，抗电网电压波动。
Super power grid compensation capacity, resist the voltage wave of power grid.
超强的电网补偿能力，抗电网电压波动。
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