单词：seismic refraction
单词：seismic refraction 相关文章
The Blurry World Underwater When you open your eyes underwater, things look blurry, but with goggles, everything looks perfectly clear. Why cant we landlubbers focus underwater without goggles? First, we need to explore how our eyes focus when were h
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This was a very shallow earthquake, which means it would tend to be more destructive. Stuart Sipkin, USGS Tuesday's earthquake hit Haiti hard, with extensive damage and many casualties. Compared to the well-known seismic areas like the Pacific Rim, t
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(SOUNDBITE OF WHALE CALL) ARI SHAPIRO, HOST: Many animals that live in the ocean communicate with sound, like this humpback whale. (SOUNDBITE OF WHALE CALL) SHAPIRO: But these voices could soon be drowned out by powerful sonic booms set off in the oc
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Now, here you see-of course, as you go further on, 如图所示－当然，当你将视线拉远， these trucks become like a pixel. 这些卡车彷佛图中的小点。 Again, imagine those all back and forth there. 同样地，想象一下这片区域
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MARIUPOL, UKRAINE Smoke billows from Azovstal steel works here, one of the many gargantuan industrial assets in this southeastern port city owned by Ukraines richest man, Rinat Akhmetov. Akhmetov employs more than 300,000 people across the region. Th
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