adjective🔗Share超声波的，超音的 (acoustics) Beyond (higher in frequency than) the range of sound perceptible to the human ear; with a frequency of 20 kilohertz or higher."The dog whistle emits an ultrasonic sound that humans can't hear, but dogs can. "这种狗哨会发出超声波的声音，人类听不见，但是狗能听见。soundphysicsfrequencytechnologyscienceelectronicsChat with AIVocabulary GamePractice Reading
