螺桨式水轮机

If a man could start out when the sun rose in the morning and keep up with it all day long, 如果一个人能在早晨太阳升起的时候出发,一整天都跟着太阳走, go over the side of the world when the sun set and keep up with it on

发表于:2018-12-04 / 阅读(96) / 评论(0) 分类 美国学生世界地理教材

奥运会的水上运动包括:Swimming(游泳),Water polo(水球),Diving(跳水),and Synchronized swimming(花样游泳) Swimming has been on the Olympic Games programme since the first modern Olym

发表于:2019-01-03 / 阅读(57) / 评论(0) 分类 奥运英语

AGRICULTURE REPORT - Using Water to Produce Electricity By Gary Garriott Broadcast: Tuesday, May 04, 2004 This is the VOA Special English Agriculture Report. The power of flowing water can be used to

发表于:2019-01-04 / 阅读(79) / 评论(0) 分类 农业与发展

Amid the recent economic downturn, demand in the U.S. is rising for small wind turbines to power people's homes. The American Wind Energy Association says sales of such turbines rose 15 percent in 2009. One man in Florida is generating his own power

发表于:2019-01-04 / 阅读(65) / 评论(0) 分类 VOA标准英语2010年(六)月

Bird-friendly Bladeless Wind Turbine Mimics Nature Energy created by conventional three-blade wind turbines is cheap, sustainable and pollution-free. But according to current estimates, the devices' fast-moving blades kill up to 300,000 birds annuall

发表于:2019-01-14 / 阅读(90) / 评论(0) 分类 VOA标准英语2015年(十一月)

By Brian Wagner Key West, Florida 06 March 2008 Researchers in the United States are set to begin testing underwater turbine systems that can produce electricity from ocean water flows. The projects in Florida are the latest efforts to find alternati

发表于:2019-02-05 / 阅读(44) / 评论(0) 分类 VOA标准英语2008年(三月)