标签：日食奇观 相关文章

科学美国人60秒 SSS Recycle Your Eclipse Glasses

Recycle Your Eclipse Glasses 公益！回收利用日食观测镜 Youve all taken off your glasses by now, along with the family and friends of my friend Dennis Meredith. Because the Great American Eclipse of 2017 has come and gone. And most people i

发表于:2018-12-24 / 阅读(55) / 评论(0) 分类 2017年Scientific American(九)月
最新学习文章
热门学习文章