单词：Bohr magnetron
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微波炉发明源于一项最高军事机密 Many people around the world use a microwave oven every day, not knowing that a crucial part of it was once a top military secret. 世界上许多人每天都在使用微波炉,但却不了解它曾经是一
发表于:2018-12-16 / 阅读(101) / 评论(0)
VOA标准英语2016年(二月)
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It was while puzzling over this problem that Bohr was struck by a solution and dashed off his famous paper. Called On the Constitutions of Atoms and Molecules, the paper explained how electrons could keep from falling into the nucleus by suggesting t
发表于:2019-02-17 / 阅读(104) / 评论(0)
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万物简史