臂带上的声波检测器带有五个压电悬臂，每一个可以检测某个特定频段的声音。
The acoustic detector in the armband contains five piezoelectric cantilevers, each weighted to respond to certain bands of sound frequencies.
臂带上的声波检测器带有五个压电悬臂，每一个可以检测某个特定频段的声音。
The acoustic detector in the armband contains five piezoelectric cantilevers, each weighted to respond to certain bands of sound frequencies.
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