[填空题]
Eclipses happen on Earth becabn,a)szzq x /,use of y gbs4yv envttvn iw12+: 9.j;an amazing coincidence. Calculate, using the information inside the Front Cover, the angular diamv1by v tyni 4 n2j;:9vgtwe+.seters (in radians) of the Sun and the Moon, as seen on Earth. Sun = $rad$ Moon = $rad$
Post time 2025-2-18 20:00:22
