| 单词 | ultrasonography |
| 释义 | ultrasonic /ul-trə-sonˈik/adjectiveRelating to, or (of an instrument or process) using sound waves of too high a frequency to be audible to the human ear ORIGIN: ultra- (2) ultrasonˈically adverb ultrasonˈics singular noun The study of such vibrations, used medically for diagnostic and therapeutic purposes ultrasonography /-sən-ogˈrə-fi/ noun The directing of ultrasonic waves through body tissues to detect abnormalities, eg in a fetus ultrasonic communication noun Underwater communication using ultrasonic waves |
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