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标签:大学  来源:英语作文网  作者:本站整理  发布时间:2010-05-17  ★★★加入收藏〗〖手机版
摘要:飞机发展史英文版介绍,好学英文网分享出来,希望大家参考。对飞机的发展历程能有个全方位的认识。不懂得单词可通过http://www.joozone.com/fy/获取.…

Orville Wright demonstrates America's first military airplane at Fort Meyer, Virginia in 1908.
The Pioneers, 1910 to 1914 -- Once shown the way, aeronautical engineers in America and Europe quickly catch up to the Wrights and surpass them. Races and air meets improve the speed and endurance of aircraft. The box-kite appearance of the first primitive pusher aircraft gives way to the streamlined design of the tractor biplanes and monoplanes.

The 1910 Dunne Flying Wing, the world's first airplane that was developed in strict secrecy.
The Great War, 1915 to 1918 -- The First World War elevates the aircraft from a machine for scouting and observation to a versatile weapon with both defensive and offensive roles in warfare. The first fighters and bombers evolve during this conflict.

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付出与收获Hard Work and Income
  我总是听到朋友们的抱怨,他们说收入太少了,以至于无法收支平衡。刚开始,我会为他们感到遗憾,但是长期下来,我发现他们的工作很轻松,他…
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