| ultrasonics | That part of the science of acoustics dealing with the frequency range beyond the upper limit of perception by the human ear (beyond 20,000 hertz per second), but usually restricted to frequencies above 500,000 hertz per second. Ultrasonic radiation is injurious to tissues because of its thermal effects when absorbed by living matter, but in controlled doses it is used therapeutically to selectively break down tissues, as in treatment of arthritis and lesions of the nervous system, and also as a diagnostic aid by visually displaying echoes received from irradiated tissues, as in echocardiography and echoencephalography. (12 Dec 1998) |
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Synonyms : Shock Waves, Ultrasonic, Ultrasonic, Ultrasound, Doppler
| ultrasonics |
the application of ultrasonic energy to do work (specifically as opposed to subsonic, supersonic, or transsonic, qv).
출처: home.att.net/~Berliner-Ultrasonics/us-gloss.html
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| ultrasonics |
the technology associated with the use of sound above 15 kHz. Applied to thickness, density, flow and level sensing. Also used for imaging
출처: www.capgo.com/Resources/Sensors/SensorGlossary.htm...
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제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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