第三人称复数：ultrasonics
ultrasonic基本解释
形容词[声]超声的; 超音波的，超音速的
名词超声波
ultrasonic词典解释
1. 超声波的
Ultrasonic sounds have very high frequencies, which human beings cannot hear.
ultrasonic的翻译
ultrasonic英英释义
adj
1. having frequencies above those of audible sound
Synonym: supersonic
