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科学美国人60秒 SSS 雷达扫描朝鲜核弹的详细信息

Radar Scans Detail North Korean Nukes North Korea has promised to close its underground nuclear test site at Mount Mantap later this month. Shortly thereafter, President Trump is set to meet North Korea's leader Kim Jong-un in Singapore. 朝鲜已承诺

发表于:2018-12-24 / 阅读(55) / 评论(0) 分类 2018年科学美国人5月

School builds huge camera obscura

BBC Learning English London Life School builds huge camera obscura Amber:Hello, I'm Amber, and youre listening to bbclearningenglish.com. In London Life today, we visit a school to hear about a very unusual new piece of playground equipment! The Mic

发表于:2019-01-16 / 阅读(158) / 评论(0) 分类 伦敦生活

2016年CRI World's largest radio telescope ＂can shed first light＂ in exploring universe: astronomers

The Five-hundred-meter wide Aperture Spherical Telescope, or FAST, is now operational in the mountains of Guizhou in southwest China. FAST has been designed to help Chinese researchers better understand our universe, as well as probe the cosmos for e

发表于:2019-01-19 / 阅读(115) / 评论(0) 分类 2016CRI中国国际广播电台
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