[填空题]
Eclipses happen on Earth becau8kc j b wk/w1r p0*z84gw)ifdkse of an amazing coincidence1h,dm ) 6vhu-y7ys ilneft.yit0tuj9a,(8c z. Calculate, using the information inside the Front Cover, the angular diameters (in ra nh9clv0yd18t m, hjf.u7a( i)ye ui-ytzts6,dians) of the Sun and the Moon, as seen on Earth. Sun = $rad$ Moon = $rad$
Post time 2025-2-18 20:00:22
