Winter is coming with a magnificent starry sky. How about constellations?
see: http://www.www.softbeam.net/wordpress/wp-co … lation.pdf
Category: Physical
有关自然，物理的日志
有关自然，物理的日志
Winter is coming with a magnificent starry sky. How about constellations?
see: http://www.www.softbeam.net/wordpress/wp-co … lation.pdf