| obliquity |
In general the angle between the equatorial and orbital planes of a body or, equivalently, between the rotational and orbital poles. For the Earth the obliquity of the ecliptic is the angle between the planes of the equator and the ecliptic.
출처: www.angelfire.com/stars5/astroinfo/gloss/o.html
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| observer |
(a) Anything in receipt of electromagnetic radiation. (b) Idealized person or piece of equipment, often hypothetical that measures relevant properties of a physical system.
출처: www.angelfire.com/stars5/astroinfo/gloss/o.html
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| OB |
Spectral type O or B - that is, hot and blue.
출처: www.angelfire.com/stars5/astroinfo/gloss/o.html
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| OB |
perfixed to a word generally signifies inversely.
출처: www.biology.lsu.edu/heydrjay/ThomasSay/terms.html
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| obtuse |
blunt; ending in a segment or circle.
출처: www.biology.lsu.edu/heydrjay/ThomasSay/terms.html
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