单词：sum square within groups
单词：sum square within groups 相关文章
France Hopes to Get More Wind Energy from Its Coasts France recently launched its first floating wind turbine. The new turbine is called Floatgen. It is near the countrys western coast. Makers of the turbine say it is able to provide electricity for
2017年VOA慢速英语(十二)月
Idiom: On my back 一个人不停地对某人唠叨 Hit the book: Harness Sustainable Emission Inexhaustible Mitigate Turbine
趣味青春英语
Elevation 《高飞》古墓丽影主题曲 演唱者：U2 ElevationNBA宣传歌曲，来自U2乐队。众多中锋爆发力十足的灌篮和封盖，以及摘抢篮板时的自信配以Bono霸气的演唱与U2狂放的编曲，充分体现了中锋身
电影歌曲
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
VOA标准英语2010年(六)月
仿生无桨叶风力发电机 Energy created by conventional three-blade wind turbines is cheap, sustainable and pollution-free. But according to current estimates, their fast-moving blades kill up to 300,000 birds annually in the U.S. 三叶风力发
VOA标准英语2016年(一月)
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
VOA标准英语2015年(十一月)