而SPWM（正弦波脉宽调制）波的产生和控制则是变频技术的核心之一。
The generating and controll of Sinusoidal Pulse-Width Modulation (SPWM) waveforms is one of the core technology of frequency conversion.
而SPWM（正弦波脉宽调制）波的产生和控制则是变频技术的核心之一。
The generating and controll of Sinusoidal Pulse-Width Modulation (SPWM) waveforms is one of the core technology of frequency conversion.
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