| 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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| ultraviolet |
The part of the spectrum just beyond violet. Ultraviolet light is invisible to the human eye but strongly affects photographic materials.
출처: www.vistek.ca/glossary/default.asp
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| ultraviolet |
That portion of the electromagnetic spectrum below blue light (380 nanometers).
출처: www.flw.com/define_u.htm
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| ultrasound |
This test uses sound waves to view and examine the fetus or view the internal organs. It can also be used to measure bone size (usually femur length and skull diameter) to aid in gauging the gestational age of the fetus.
출처: pregnancytoday.com/reference/library/glossary.htm
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| ultrasonography |
A test in which sound waves are bounced off body tissue, and the echos are converted into a picture, for the purpose of medical examination or diagnosis, that are viewed on a monitor.
출처: www.radiochemistry.org/nuclearmedicine/dictionary/...
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