单词：stationary potential energy
单词：stationary potential energy 相关文章
By Peter Fedynsky Kyiv 30 September 2007 Ukrainians cast their ballots in a special parliamentary election, in which domestic and international observers sought to assure an honest vote.Opposition leader Yulia Tymoshenko says she will ask President V
2007年VOA标准英语（九月）
Welcome to This I Believe, an NPR series presenting the personal philosophies of remarkable men and women from all walks of life. Support for NPR Podcasts comes from Visa, offering the Visa signature card, featuring concierge services for travel, din
2007年NPR美国国家公共电台
Do you like working up a sweat? Or do you feel like maybe sweat should work for you? Well, hold on to your sudoriferous glands. Because researchers have designed a device that could someday produce power from your perspiration. The schvitzy scheme wa
2014年Scientific American(八)月
Welcome to the Science Talk, the weekly podcast of Scientific American posted on February 18th, 2010. I am Steve Mirsky. And you know what the hottest sport in the world is right now? Thanks to the Winter Olympics, it is, of course, curling. That's t
Scientific American(二)月
Ordering more stationary A: Okay, then, Mary. We need 10 more loose-leaf binders, five pounds of heavy duty white paper, and what else did I say? B: Two boxes of transparencies for the over-head machines. A: Right. And Id like one of those new electr
办公室英语口语
第66期:In a Stationary Store Y:I'd like to see that pen,please. Y:我想看一看那支笔。 X:You mean fihis one? X:您说这支吗? Y:No，the other one in the brown case. Y:不是，是棕色盒子的那一支。 X:Oh，this one.Here. X:哦，这
出国旅游口语一本通
Potential energy in a crossbow When we think of the concept of energy, we often think of objects in motion: a car rolling down a hill or a jogger running up a hill. This kind of energy-in-motion, called kinetic energy, isnt the only kind of energy. A
英语时差8，16
Tesla unveils batteries to power homes US electric carmaker Tesla Motors has unveiled batteries that can power homes and businesses. Chief executive Elon Musk announced the firm would build batteries that store solar energy and serve as a back-up sys
英语PK台
And it's why, over the last eight years, we've modernized the government's approach to innovation for the 21st Century. 也因此,在过去的8年里,我们让政府在21世纪的创新方式上现代化。 We've jumpstarted a clean energy revolution
奥巴马每周电视讲话
This is Scientific American's 60-Second Science .I'm Cynthia Graber. This'll just take a minute. It's Valentine's Day, even for barnacles which are stuck to rocks. But evolution has endowed these stationary creatures with some curious abilities accor
Scientific American(二)月
New research suggests ayahuasca, a jungle vine found in the Peruvian rainforest, can have a powerful effect on the human central nervous system when brewed with other plants. Researchers say one of ayahuasca's most promising uses could be in treating
VOA标准英语2010年(三月)
By Selah Hennessy London 20 October 2009 A global watchdog group says world oil supplies are running low and that may lead to food shortages and spiraling armed conflict. Britain-based Global Witness says governments are doing nothing to prepare for
VOA标准英语2009年(十月)
Fusion is how stars produce energy. It occurs when the nuclei of light atoms, such as hydrogen, are fused together under extreme pressure and heat. Tokamak Energy, from Oxfordshire, believes that the third version of their compact, spherical tokamak
2015CRI中国国际广播电台
Holloa! cried stationary Elijah, hailing us when we had removed a few paces. 嗨！ 我刚走了几步，站在后面的以利亚又吆喝起来。 Never mind him, said I, Queequeg, come on. 别理他，咱们走。 我招呼着魁魁格。 But he st
白鲸记
In an age of contactless cards and paying with your smartphone, the idea of getting cash out of an ATM machine may seem a little dated. 在这个非接触式智能卡和智能手机付款盛行的时代，去ATM机取钱显得有点过时。 But now
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How to Create Passion Anywhere and Anytime Remember Science class? Mr. Thatcher, sophomore year in high school, taught us about potential and kinetic energy. I was way more interested in Pam Miller, who sat perilously close to me. But on Mr Thatcher
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Students at the Dalian Nationalities University in China have designed a bike washing machine that will wash your clothes while you pedal. The invention is aptly called Bike Washing Machine or BiWa, and it aims to bring health and convenience to our
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Swinging Physics: Potential And Kinetic Energy Working Together 动能与势能相互作用 动能是所有能看到的运动的能量，包括物体的，微粒的或质点集的运动等。 势能(Potential energy )是位置的函数，例如把一个
英语听力文摘 English Digest
Sit on a swing, let someone push you, and away you go. But what happens if the person who pushed you walks away, and you want to swing faster and higher. If you've ever been in the second grade, you know the solution to that. Just start pumping your
英语时差8，16