生活大爆炸第二季第二十集二_3

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SSS 2011-05-23

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Whether it's for streaming Netflix or sharing files, we're gobbling up more and more dataand we want it faster. But even shooting data with lasers over fiber-o

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Multimode Optical Fiber(S) Multimode fibers, with much wider cores than single mode fibers, allow light to enter at various angles, and reflect (bounce off of) core-clad boundaries as electromagnetic

NPR 2009-08-01

The government reports the nation's Gross Domestic Product fell one percent in the first quarter, a far slower contraction than the previous quarter when GDP shrank 6.4%. President Obama called it progress resulting from his administration's actions

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VOA慢速英语2015 志愿者在夏威夷体验火星

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Different combinations of sniffing in and out can be used to control a wheelchair. Reasearchers in Israel have developed an electronic controller that allows severely disabled people to control their wheelchairs or computers with a simple sniff of th

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TED演讲:世上最难翻译的词之一

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VOA慢速英语20060815b

SCIENCE IN THE NEWS - Rethinking the Personal Computer in a World That Centers on the InternetBy Caty Weaver and produced by Mario Ritter Broadcast: Tuesday, August 15, 2006 VOICE ONE: This is SCIENCE

Public feedback invited on disabled law's implementation

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微电子辞典-1

Abrupt junction 突变结 Accelerated testing 加速实验 Acceptor 受主 Acceptor atom 受主原子 Accumulation 积累、堆积 Accumulating contact 积累接触 Accumulation region 积累区 Accum

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Before I talk about that, 谈到这之前 I've written down at the bottom there 我在底下标出了 the slope of this curve, this straight line. 这条曲线的斜率，即这条直线 It's three-quarters, roughly, 大约为3比4 which is less than

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These institutions are standing in the way of innovation. 这些机构急需变革。 How many of you use Facebook photos, Google Photos, Instagram? 你们有多少人在用脸书相册、谷歌照片、Instagram呢？ My photos are everywhere. They

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