标签：Radiation 相关文章
In 2008 astronomers discovered surprising amounts of water molecules where planets were forming near young stars. But how, they wondered, could those molecules survive? They should have been destroyed by ultraviolet radiation. In theory, planetary du
Scientific American(十二)月
But I needed something else. I needed something to go that extra mile, and I found it in that metaphor which I had learned from my mother when I was four. 但是我需要另外一些东西，我需要增加我的旅程，我在意象中找到了它，那
TED演讲教育篇
玛丽居里（Marie Skłodowska Curie，1867-1934年）世称居里夫人，全名：玛丽亚斯克沃多夫斯卡居里。 法国著名波兰裔科学家、物理学家、化学家。1867年11月7日生于华沙。 1903年，居里夫妇和贝克勒
英语名人堂
Sunscreened Plants 遮光植物 A NASA researcher is finding that alfalfa plants grow more poorly when exposed to UVB -- ultraviolet B radiation from the sun. Learn more about sunscreened plants -- today on Earth and Sky. JB: This is Earth and Sky. Eart
(科普英语)Earth and Sky
A second robot from Tokyo Electric Power Company (Tepco) sent into Fukushima's unit 2 reactor collapsed in less than a month's time due to high radiation levels. 由于辐射程度过高，东京电力公司向福岛2号反应堆派出的机器人在不
英语新闻
This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Five very old galaxies are now known to astrophysicists, thanks to Albert Einstein. A century ago, Einstein predicted an effect called cosmic gravitational lensing. Pictur
Scientific American(十一)月
The clues are adding up to give a picture of a distant Martian past, when the planet had a thick atmosphere that was warm enough for water to stream on the surface. But now the waters gone, and the atmosphere is so thin that any water would boil away
Scientific American(十)月
President Obama congratulated Iraqis for coming out to vote in todays parliamentary elections in spite of violence by insurgents that killed at least 38 people. That's the sound of the morning call to prayer during voting this morning at a Baghdad po
2010年NPR美国国家公共电台3月
Juno Spacecraft Enters Jupiter Orbit 朱诺号探测器进入木星轨道 American scientists cheered loudly as their spacecraft, called Juno, entered Jupiters orbit Monday night. Juno, welcome to Jupiter! The scientists are with the U.S. space agenc
2016年VOA慢速英语(七)月
物理学 statics 静力学 motion 运动 inertia 惯性 gravitation 引力 relativity 相对 gravity 地心引力 vibration 震动 medium (media) 媒质 frequency 频率 wavelength 波长 pitch 音高 intensity 强度 echo 回声 resonance 回声，洪
托福英语
My parents named me Sarah, which is a biblical name. 我父母给我取名萨拉，来源于圣经中的名字。 In the original story, God told Sarah she could do something impossible, and-- she laughed, because the first Sarah, she didn't know wha
TED演讲教育篇
LINDA WERTHEIMER, HOST: In Nashville this weekend, there's an exhibition of masks, not the kind that are used to hide, disguise or play dress-up. These have been worn by people with head or neck cancer. The plastic and mesh masks are used during radi
英语语言学习
Science and Technolgy. 科技。 Radiation and evolution. 核辐射与进化。 Surviving fallout. 辐射尘中 幸免于难。 Birds can evolve to cope with the lingering effects of nuclear incidents. 鸟类能够通过进化应对核事故的残余影
经济学人科技系列
JEFFREY BROWN:And finally tonight: Japan two years after the massive earthquake and tsunami struck its northeastern coast. Ray Suarez has the story. RAY SUAREZ:The 2011 quake was one of the strongest in recorded history. It set off a tsunami that kil
PBS访谈环境系列
35 切尼副总统的心脏病治疗手术 DATE=3-14-01 TITLE=SCIENCE REPORT- Cheney/Heart BYLINE=Nancy Steinbach (Start at 1'00
科技之光
Fear about radiation(放射辐射 ) from the nuclear power plant disaster in Japan is causing sales of seafood to dive in South Korea. At the Garak fish market, the sales pitches about fresh and cheap seafood that would usually entice customers are f
英语新闻
Deciding where to place a Wi-Fi router at home to minimise signal blackspots is a fine art. But a physicist has attempted to tackle the problem by mathematically working out the optimum position for a router. He studied how walls and reflections affe
英语新闻
Japan nuclear fears spread to China BEIJING, China By mid-afternoon Thursday, Fang Zhiming had already rummaged through three supermarkets in the Chinese capital searching for salt. She found none, but was on her way to a fourth shop, where her frien
阅读空间
From VOA Learning English, this is As It Is. Welcome back. Im Caty Weaver. On the show today, we look into the future of space exploration. The American space agency NASA has announced plans for a new effort to study the sun. And, NASA scientists are
英语语言学习
Hello and Welcome to News and Reports on China Radio International. In This Edition Kazakh Foreign Minister Yerzgan Kazykhanov tells the Shanghai Cooperation Organization that that Osama Bin Laden's death is not yet victory over terror. A worker at J
2011CRI中国国际广播电台