[填空题]
Eclipses happen on Earth becauyamagu/:n-*x /qk pf:uzlo (s1/pg ,bs5l5ugrj/h-3 nk5q0 rremei8t2k zl* se of an amazing coincidence. Calculate, using the information inside the Front Cover, the angular diameters (in radil2s8ui-n5jhe mk tger05 rr/qk l* 3z5ans) of the Sun and the Moon, as seen on Earth. Sun = $rad$ Moon = $rad$
Post time 2025-2-18 20:00:22
