solstita colure二至圈
solstitial colure[天] 二至圈;至点圈;天球上通过天极和二至点的大圆
equinoctial colure[天] 二分圈;二分点
solsticial colure二至圈
solstitial colure west bank二至圈
whiteness and colure meter白度颜色测定仪
equinoctial circle colure昼夜平分圈
N（名词） either of two great circles on the celestial sphere, one of which passes through the celestial poles and the equinoxes and the other through the poles and the solstices 分至圈