[填空题]
Eclipses happen on Earth because of di1p-h jt3- utan amazing coinh*s /h g eatwdm9,;p5jcidence. Calculate, using the inf;9ewp* s, htahjmg/d5ormation inside the Front Cover, the angular diameters (in radians) of the Sun and the Moon, as seen on Earth. Sun = $rad$ Moon = $rad$
Post time 2025-2-18 20:00:22
