单词：solar flare activity
单词：solar flare activity 相关文章
Scientists Improve Space Weather Forecast Accuracy 科学家改进空间天气预报准确性 At one time, scientists thought the space between Earth and Sun was a vacuum . But we now know that the su
VOA2005（下）--环境科学探索
Solar Eclipse in 1097 May Be Rock Carving Subject 古代雕刻记载天文景观 More than 900 years ago, the Pueblo people were thriving in New Mexicos Chaco Canyon. While they were there, the region experienced what the whole country is looking for
2017年Scientific American(八)月
While you were going about your day on February 24th of this year, the sun was ejecting a massive jet of particles into space. This phenomenon is known as a CME, a coronal mass ejection and they often come after a solar flare. Luckily for us on earth
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DEVELOPMENT REPORT – How to Make a Solar Water Heater By Gary Garriott Broadcast: Monday, November 29, 2004 I'm Gwen Outen with the VOA Special English Development Report. Solar water heaters save o
农业与发展
By Noel King Kigali 25 September 2007 Tensions are growing in eastern Democratic Republic of Congo, amid ongoing clashes between forces loyal to dissident General Laurent Nkunda and the Congolese army. But a United Nations military spokesman said Tue
2007年VOA标准英语（九月）
-Im Chris Kaufman and I here with Justin Kasper, who works at Smithsonian, hes an astrophysicist at the Smithsonian. And he's won a project thats gonna launch a probe at the sun, specifically the Solar Wind Electrons Alphas and Protons investigation,
万花筒2013年
By Paul Sisco Washington, D.C. 19 July 2007 Silicon Valley in northern California originally referred to the corporate homes of silicon chip innovators and manufacturers, and the high tech businesses in the San Francisco Bay area. Today that region i
2007年VOA标准英语（七月）
By Katherine Cole Washington 25 July 2007 The city of Taos, New Mexico, was known as the Solar Capitol of the World long before then-Governor Gary Johnson officially made that declaration in 1997. The high desert altitude of over two kilometers and c
2007年VOA标准英语（七月）
Disagreements Flare at Euro Summit French President Nicholas Sarkozy and British Prime Minister David Cameron have clashed at emergency meetings on the euro in Brussels. It comes as Members of Parliament in Britain debate a motion calling for a refer
VOA标准英语2011年(十月)
India seems to excel at making things smaller and cheaper. The $2,500 car and the $35 computer are just two of the country's latest innovations. Now, India increasingly is focused on low-cost solar technology. The front lines of that effort are seen
VOA标准英语2010年(十)月
2.WELCOME TO THE SOLAR SYSTEM 2.欢迎来到太阳系 Astronomers these days can do the most amazing things. If someone struck a match on the Moon, they could spot the flare. From the tiniest throbs and wobbles of distant stars they can infer the siz
万物简史
By Robert Berger Jerusalem 14 December 2007 Violence has erupted between rival Palestinian factions in the Gaza Strip. As Robert Berger reports from VOA's Jerusalem bureau, the newest outbreak underscores deep ideological differences two days after t
VOA常速英语2007年（十二月）
By Paul Sisco Washington 22 October 2007 Twenty college and university teams from around the world competed inthe recentSolar Decathlon that is held every two years in Washington, D.C. The U.S. Energy Department sponsors the event, and this year's wi
2007年VOA常速英语（十月）
By David McAlary Washington 07 March 2006 NCAR scientists Mausumi Dikpati (left), Peter Gilman, and Giuliana de Toma examine results from a new computer model of solar dynamics Researchers predict tha
2006年VOA标准英语（三月）
The Earth could be headed for a 'mini ice age' researchers have warned. 科学家警告称，地球可能会逐渐进入小冰河期。 A new study claims to have cracked predicting solar cycles - and says that between 2020 and 2030 solar cycles will
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PV solar technology is more complex. When sunlight hits a PV cell, electrons in the cell are knocked out of their orbits. Electric fields channel the electrons in a current used to generate electricity。 Unlike thermal solar panels, PV technology is
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Science and technology 科学技术 Climate and the solar cycle 气候与太阳周期 Chilling out in the winter sun 冬日下的冷噤 Stratospheric changes can lead to nasty cold snaps 平流层变化引起讨厌的严寒 THOSE unconvincedand those
经济学人科技系列
Even after stripping out the more crackpot notions there are still more theories for what caused the extinction events than there have been events. 即使去掉了不大切合实际的观点以后，解释灭绝事件原因的理论依然多子事件本
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