| ultraviolet radiation |
invisible form of light produced by the sun that can cause health problems to living things when they are overexposed to this rays
출처: library.thinkquest.org/5579/glossary/glossary.html
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| ultraviolet radiation |
invisible rays in sunlight that cause suntan, sunburn, premature skin aging, and most cases of skin cancer.
출처: www.ehealthmd.com/library/skincancer/SC_glossary.h...
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| ultrasound |
Ultrasound/ultrasonography: A technique used to get the image of a deep structure within the body by directing ultrasound waves at it and recording the reflections (echoes) from it.
출처: www.peteducation.com/dict_alpha_listing.cfm
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| ultrasonic |
Sounds with frequencies above 20,000 Hz and, therefore, beyond the range of human hearing.
출처: science.education.nih.gov/supplements/nih3/hearing...
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| ultrasound |
A non-invasive diagnostic technique which provides pictures of organs and structures inside the body. It works like the sonar used by submarines, bouncing sound waves off an object and using a computer to interpret the sound returned. The interpretation of an ultrasound is very dependent upon body structure, the amount of body fat, and the skill of the operator. The test is used to monitor a baby's growth and development during pregnancy and to identify any physical abnormalities.
출처: aspin.asu.edu/geneinfo/glos-u.htm
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