declination
名词 declination:
a condition inferior to an earlier condition; a gradual falling off from a better state
同义词:decline
a downward slope or bend
同义词:descent, declivity, fall, decline, declension, downslope
(astronomy) the angular distance of a celestial body north or south of the celestial equator; expressed in degrees; used with right ascension to specify positions on the celestial sphere
同义词:celestial latitude, dec
a polite refusal of an invitation
同义词:regrets