[填空题]
Eclipses happen on Earthg/ hh rcuj1w(rq pq-o*x3o;(y bxg;6oe, zyfxz-ihb41 m);,f f. ic poiecause of an amazing coincidence. Calculate, using the information inside the Front Cover, the angular diameters (in radians) of the Sun and the Moon, as seen o)6mx4zo , ;pi iohcxfgyefz-;.if b1 ,n Earth. Sun = $rad$ Moon = $rad$
Post time 2025-2-18 20:00:22
