vibrate over
振动在
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Made of a material known as polyvinylidene fluoride (PVDF), this belt produces an electric charge whenever low-speed airflow passes over it and causes it to vibrate -- a result of that vaunted piezoelectric effect.
ENGADGET: Piezoelectric system turns your balmy breath into pungent power
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