| 释义 |
galactic equator galactic equator n.（名词）The great circle of the celestial sphere that lies in the plane bisecting the band of the Milky Way, inclined at an angle of approximately 62&9{=} to the celestial equator.Also called galactic circle 银道圈：天球上在两个银极中间的大圆，平分银河中心线并与天赤道的倾角为62度也作 galactic circle |