英语词汇“ultrasound”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮

单词

ultrasound

释义

ultrasound|ˈʌltrəsaʊnd|
[f. ultra- 2 c + sound n.³]
Sound waves or vibrations with frequencies greater than those audible to the human ear, or greater than 20,000 Hz; also, ultrasonic techniques.
1923Proc. & Trans. R. Soc. Canada XVII. iii. 143 When the electrical exciting sources were alternating in potential, the tonic trains of ultra-sound so produced—120 pulses per second—could be heard in the stethoscope.1936Jrnl. R. Aeronaut. Soc. XL. 25 Ultra-sound waves are generated by a quartz oscillator arc propagated through a surrounding liquid medium.1953J. Y. Cousteau Silent World 104 Are porpoises equipped with sonic or ultra-sound apparatus by which their squeaks give them the feel of unseen bottom topography?1958Oxford Mail 30 June 4/4 Some firms now use ultrasound to detect flaws in metal.1968New Scientist 16 May 347/1 The moth's sensitivity to ultrasound may have other uses.1984Times 16 Nov. 12/4 Any woman who is worried about malformations would be subject to a detailed ultrasound scan.

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