hour circle
/ˈauə ˈsə:kl/
中文翻译
时刻度环, 时圈, 子午线
常见例句
1
he merged with the god Amen as Amen-Ra to become the king of the gods n (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