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In 1940, North American Aviation designed the legendary P-51 Mustang in response to the British need for a high-performance fighter aircraft. The Mustang featured the most advanced laminar flow wing and a ducted cooling radiator positioned under the

发表于:2018-12-30 / 阅读(86) / 评论(0) 分类 国家地理2007年

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

By Brian Padden Paris 20 June 2007 The 47th International Paris Air Show is running this week. It is a showcase of aviation and aerospace technology. And as VOA's Brian Padden reports, this is big, big business with more than 2,000 exhibitors from 42

发表于:2019-01-07 / 阅读(114) / 评论(0) 分类 2007年VOA标准英语(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)

The components of the worlds first 3D printed engine are on display at the Australian International Airshow at the Avalon Airfield near Lara southwest of Melbourne on February 27 2015. [Photo: CFP] An Australian researcher is in Beijing to deliver le

发表于:2019-02-05 / 阅读(98) / 评论(0) 分类 英语新闻

Request diversion to the nearest suitable airport due AC BUS failure. 501. 我们一个交流汇流条故障了,申请备降到最近合适机场。 We are not supplying power to our DC BUS. Request priority landing. 502. 我们不再为直流汇流条

发表于:2019-03-10 / 阅读(149) / 评论(0) 分类 飞行员英语900句