英语词汇“ultrasonic wave”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	ultrasonic wave
释义	DictionarySeeultrasound ultrasonic wave ultrasonic wave [¦əl·trə′sän·ik ′wāv] (acoustics) A sound wave that has a frequency above about 20,000 hertz. ultrasonic wave ultrasonic wave A sound wave of greater frequency than 20 kHz. These waves do not produce sound audible to the human ear. See also: wave FinancialSeeWave
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