| AO |
Arctic Oscillation - the Arctic Oscillation is a pattern in which atmospheric pressure at polar and middle latitudes fluctuates between negative and positive phases. The negative phase brings higher-than-normal pressure over the polar region and lower-than-normal pressure at about 45 degrees north latitude. The negative phase allows cold air to plunge into the Midwestern United States and western Europe, and storms bring rain to the Mediterranean. ...
출처: weather.gov/glossary/glossary.php
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|---|---|
| AoA |
At or above
출처: weather.gov/glossary/glossary.php
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| aortic valve |
the valve that regulates blood flow from the heart into the aorta.
출처: www.health.uab.edu/show.asp
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| aorta |
the largest artery in the body and the primary blood vessel leading from the heart to the body.
출처: www.health.uab.edu/show.asp
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| aortic arch |
the curved portion of the aorta (the large blood vessel that carries oxygen-rich blood away from the heart to the body).
출처: www.uchicagokidshospital.org/online-library/conten...
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