| 释义 |
celestial longitude
基本英英近义反义
黄经
Noun:
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 近义词 right ascension赤经Ra化元素镭（radiu… |