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right ascension的英文翻譯是什麼意思，詞典釋義與在線翻譯：
英英釋義
Noun:
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(astronomy) the equatorial coordinate specifying the angle, measured eastward along the celestial equator, from the vernal equinox to the intersection of the hour circle that passes through an object in the sky; usually expressed in hours and minutes and seconds; used with declination to specify positions on the celestial sphere;
"one hour of right ascension equals fifteen degrees"
