单词：solar activity index
单词：solar activity index 相关文章
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 Heda Bayron Zamboanga del Norte, Philippines 16 July 2007 House with solar panel unit in Patagan Electricity has yet to reach hundreds of far-flung villages in the Philippines. But a solar energy system project for the country's remote villages is
2007年VOA标准英语（七月）
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）
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
The Australian share market has reversed earlier gains. Right now, the All Ordinaries index is down around half of a per cent, as is the ASX 200 index. The banks are weaker. Insurance, like QBE insurance, are on the rise. Mining stocks are down. The
澳洲ABC新闻快递2013年
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）
A wave of foreclosures and a glut of unsold homes pushed U.S. housing prices down in March. Tuesday's report from the closely-watched Case-Shiller index of property values in 20 U.S. cities was 3.6 percent below the same month a year earlier. High un
英语新闻
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 manufacturing purchasing managers index published by the National Bureau of Statistics fell to 49.9 in June, below the 50-point line delineating growth from contraction for the first time in four months. That was just a hair below a consensus for
英语新闻
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
阅读空间
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)
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
Broadcast on Coast to Coast: June 26, 2003 AA: I'm Avi Arditti with Rosanne Skirble, and this week on Wordmaster -- we chat again with English teacher Lida Baker in Los Angeles about how to encourage English learners to speak up in class. RS: This we
词汇大师(Wordmaster)
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
Latest official data shows China's manufacturing business activity continued to improve in May. The manufacturing purchasing managers' index (PMI), a key measure of factory activity in China, posted at 50.2 last month, up 0.1 percentage points from A
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