right ascension
(缩略词： RA)
noun
- Astronomy the distance of a point east of the First Point of Aries, measured along the celestial equator and expressed in hours, minutes, and seconds【天文】赤经。比较DECLINATION 和CELESTIAL LONGITUDE.
| 单词 | right ascension |
| 释义 | right ascension(缩略词： RA) noun
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