[填空题]
Eclipses happen on Earte5tjvh)0 k6w4-tihu ch because of an amazing coincidence. Calcul,6j.j:p . /tk a ll9)9q;xrwegkty yxaate, using the information inside the Front Cover, the angular diameters (in radians) of the Sun and th 9e/ k: ay. tjwjkyr, xlx;gl)tqa9.p6e Moon, as seen on Earth. Sun = $rad$ Moon = $rad$
Post time 2025-2-18 20:00:22
