单词：graded energy gap solar cell
单词：graded energy gap solar cell 相关文章
Prototype Solar Cars Train Future Alternative Energy Experts JOHANNESBURG In South Africa, students at the University of Johannesburg have taken on the challenge of building their own solar cars and racing them in competitions. While it offers plenty
VOA常速英语2013年(十二月)
A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the
新东方背诵文选
AS IT IS 2013-04-29How India Has Become an Important Market for Developers of Solar Energy Welcome to AS IT IS, a daily show from VOA Learning English. Im Christopher Cruise. Today, we report on how India has become an important market for developers
2013年VOA慢速英语(五)月
Student Architects Shine in Solar Energy Contest Dreams and designs of young architects are shining brightly in Washington at the bi-annual Solar Decathlon. They have come from around the world, college students combining their education with their i
VOA标准英语2011年(九月)
From VOA Learning English, this is the Education Report. A group of students from Kenya was among winners of the 2017 Zayed Future Energy Prize. The 10-member team is receiving a $100,000 award to make their school a green energy institution. The Zay
2017年VOA慢速英语(三)月
Solar Powered Plane Starts World Tour A Swiss airplane powered only by energy from the sun left from Abu Dhabi early on March 9. Its creators hope the plane will make the first around-the-world journey without any fuel. The plane is called Solar Impu
2015年VOA慢速英语(三)月
Large Windows Could Capture Solar Energy 利用大窗户吸收太阳能 Solar cells have been around since the 1950s. But now there is a race to develop transparent solar cell that can cover windows of buildings and still capture the suns light for e
2016年VOA慢速英语(八)月
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）
By Greg Flakus Albuquerque, New Mexico 25 July 2007 Large scale collection of solar power arrays As the world searches for ways to produce energy without burning fossil fuel, there is increased interest in solar energy. One place associated with sola
2007年VOA标准英语（七月）
By Uma Ramiah Dakar 21 May 2008 A year-old project in Benin has shown that harnessing the power of sunlight could provide long-term solutions to hunger in underdeveloped nations. A six-month dry season in the Kalale District of Benin used to wreak ha
VOA标准英语2008年（五月）
By Brian Wagner Miami 27 October 2009 President Barack Obama speaks during his tour of the DeSoto Next Generation Solar Energy Center in Arcadia, Florida, 27 Oct 2009 President Barack Obama traveled to Florida on Tuesday to help unveil the nation's
VOA标准英语2009年(十月)
By Prospero Laput Zamboanga del Norte, Philippines 16 July 2007 Electricity has yet to reach hundreds of villages in the Philippines. The Philippine government is tapping innovative technology to light up some villages, but in this report by producer
2007年VOA标准英语（七月）
Solar energy is the key to our future. If we do not use it, our planet will not survive. We do not have enough resources on Earth to supply our energy needs. We are slowly using solar energy more. Most places you go in the world today you can see sol
听一分钟英文-S
BOSTON, the United States, April 9 (Xinhua) -- China's clean energy market offers huge business opportunities, experts said at the Harvard China Forum here Saturday. In a panel discussion on clean energy, experts who have been keeping a close eye on
英语新闻
New policies support ailing solar industry BEIJING, Oct. 28 (Xinhua) -- China is creating supportive measures to shore up its ailing photovoltaic (PV) industry, which has been rocked by recent U.S. duties on Chinese exports over alleged dumping. In t
英语新闻
By Zulima Palacio Washington 14 October 2009 One of the solar homes at this year's Solar Decathlon in Washington, DC On the National Mall in Washington, the 2009 Solar Decathlon has begun, with 20 university-led teams from four countries. Each has b
VOA标准英语2009年(十月)
The International Solar Decathlon has concluded in the US Capital of Washington, after 19 teams from 5 countries competed using their own unique designs. A team of university students from China were also there. Here's Wei Tong has more. China's Tong
世界各地新闻集锦
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
英语时差8，16
SANYA, Hainan, Dec. 4 (Xinhua) -- The five BRICS nations intend to focus and work together on developing alternative energy sources. When Bu Xiaolin, vice governor of China's coal-rich Inner Mongolia autonomous region, spoke over the weekend in front
英语新闻