单词：Cowper blast air heater
单词：Cowper blast air heater 相关文章
Technology Report - How to Make Your Own Solar Water Heater This is the VOA Special English Technology Report. Solar water heaters are used around the world and are not very difficult to build. The system we are going to describe is based on a design
2011年VOA慢速英语(四)月
An Obama administration official says the top U.S. commander in Afghanistan has been summoned to Washington to explain his controversial comments about President Barack Obama and members of his administration in a recent interview. Also, Britain's sp
VOA双语新闻 2010年6月
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
Temperatures in some parts of the country have eased a bit over the weekend. But there is no risk that throngs of people are suddenly going to turn their backs on air-conditioning. The air-conditioner has established itself well in the hearts of Amer
2006年NPR美国国家公共电台
NATO commander in Afghanistan US General Stanley McChrystal leaves by helicopter after a meeting between President Hamid Karzai and tribal leaders in Kandahar city, Afghanistan (File Photo - 13 Jun 2010) An Obama administration official says the top
VOA标准英语2010年(六)月
Police officials in Pakistan's volatile northwest region say an improvised explosive device detonated under a vehicle carrying troops and civilian employees of a Pakistani air force base, killing at least 13 people. VOA's Barry Newhouse reports that
VOA标准英语2008年（八月）