单词：radiation belt model
单词：radiation belt model 相关文章
Black holes got their name because light can't escape them, beyond a certain radiusthe event horizon. But in 1974 Stephen Hawking proposed that quantum effects at the event horizon might cause black holes to benot completely black. Hawking said that
2016年Scientific American(八)月
NASA Probing Secrets of Van Allen Radiation Belt 美国航天局探秘范艾伦辐射带 One of the first discoveries of the space age, made in 1958, was that the Earth is surrounded with a doughnut-shaped field of highly charged particles. It was na
VOA标准英语2014年(八月)
And in a lot of ways, this is how you would master a lot of things in life. 在很多方面，这也是掌握新技能的一种途径。 It's the way you would learn a martial art. 好比学习武术。 In a martial art, you would practice the white
TED演讲科学篇
美国航天局探秘范艾伦辐射带 One of the first discoveries of the space age, made in 1958, was that the Earth is surrounded with a doughnut-shaped field of highly charged particles. It was named the Van Allen radiation belt, after its disco
VOA双语新闻 2014年8月
Friday has marked the first anniversary of the opening of the first direct Chinese air-postal route linking the eastern province of Zhejiang with Russia. The logistics link - which is helping feed the growing e-commerce ties between China and Russia
2018CRI中国国际广播电台
17 Where are the passengers? [A] In the train [B] On the ship [C] In the plane 18 Why has the captain asked the passengers to keep their seat belts on? [A] The plane is going to land [B] The plane is going to take off [C] The air might become very ro
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