单词：time-of-flight neutron spectrometer
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8 Volcanic Eruption In north-west Cameroon in August 1986， there was a volcanic eruption which devastated the area． At least 1，200 people were killed and many were left seriously ill with burns and respiratory infections． Nobody could escape b
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Throughout my 41 years at GE, I’ve had many ups and downs. In the media, I’ve gone from prince to pig and back again. And I’ve been called many things. In the early days, when I worked at our 1)
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A:Mrs Mar,I saw your raising bicycles over there.It really looks smart. B:You said it.They are the new models of our name brand Phynex raising bicycles,a lot lighter than the other ones.A great favourite with the young people abroad. A:How much do t
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Scientists have long believed that a star explodes when it reaches the end of its life. This explosion is called a supernova. NASA, the American space agency, describes a supernova as the largest explosion that takes place in space. Recently, a team
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Unit 95 Scientists Look Forward to the Past Can time travel really be done? Physicists think that travel into future is possible. Einstein's special theory of relativity, published in 1905, predicted that time should be elastic, stretching or shrinki
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What is a black hole? Well, it's difficult to answer this question, since the terms we would normally use to describe a scientific phenomenon are inadequate here. Astronomers and scientists think that a black hole is a region of space (not a thing) i
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Neutron Star Collision (Love is Forever)---MUSE I was searching You were on a mission Then our hearts combined like A neutron star collision I have nothing left to lose You took your time to choose Then we told each other With no trace of fear that..
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《暮光3:月食》高清主题曲Neutron Star Collision Neutron Star Collision (Love is Forever)---MUSE I was searching You were on a mission Then our hearts combined like A neutron star collision I have nothing left to lose You took your time to c
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This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? The Apollo moon missions ended almost 40 years ago. But for lunar scientists, they're gifts that keep on giving. Researchers studying rocks brought back by ast
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MARY LOUISE KELLY, HOST: For the first time, scientists have seen the violent collision of two neutron stars. They've watched as heavy elements like gold, platinum and uranium were forged. This cosmic smashup is being hailed as one of the biggest eve
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Hello, I am Melissa Long at the CNN Center here in Atlanta one o'clock in the afternoon Eastern time. And here's a look at what's happening NOW IN THE NEWS. Two hundred people are out of their homes in Cedar Rapids, Iowa after fears that flood water
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They were proposed almost exactly 100 years ago by Albert Einstein based on his theory of general relativity but it was only in February 2016 that scientists proved the existence of gravitational waves. And now China is starting work on the worlds hi
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【原文】 Black HolesWhat is a black hole? Well, it's difficult to answer this question, since the terms we would normally use to describe a scientific phenomenon are inadequate here. Astronomers and scientists think that a black hole is a region
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It looks like a hand of God reaching out into the cosmos, but NASA says the display is caused by a young and powerful pulsar. Taken by NASA's Chandra X-ray observatory from it's orbiting 360 miles above the Earth, the recently released photo of Pulsa
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托福阅读的文章，都有自己的背景，关于托福阅读背景，有的是移民背景，有的是工业革命背景，而在托福考试中，我的托福阅读背景是经常出现的，这些经常出现的托福阅读背景，就是我们
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