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词汇
ultrasonic frequency
释义
ultrasonic frequency
短语¹⁸⁰⁰⁹⁸⁺
¹
基本
例句
超声波频率,超声频,超音频,超声频率
A frequency transposition device is also provided for converting the electrical signal to an ultrasonic frequency electrical signal.
数字信号处理装置主要是用来进行语音信号的数字处理；
qfpaper
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on socialist political civilization tentatively
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更新时间：2026/9/25 1:55:01