[填空题]
Eclipses happen on Earth because of an am18l;d qddp y4uv73oqy azing coinctin pv j6br+mdfk2 .d4,v )91sjmsa9p idence. Calculate, using the informnt6mi)j+v . 9dps9f2k 1sp4,rjmavb d ation 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
