[填空题]
Eclipses happen on Earth becau, ;4f-yrfzswq se of an amazing coincidence. Calculate, uz yjg2b4. no;s9j:s njsing the information inside the Front Cover, the angular diamesj2 . :g9onjbnzsjy4; ters (in radians) of the Sun and the Moon, as seen on Earth. Sun = $rad$ Moon = $rad$
Post time 2025-2-18 20:00:22
