标签:lesson51 相关文章
此语音文件由世界图书出版社授权发布,如需文本,请购买正版图书。 基本信息 作者:张云风刘芳 出版社:世界图书出版公司 页码:403 页码 出版日:2008年 ISBN:7506294028/9787506294027 条码:9787506294027 版次:1版 装帧:其他 开本:32 中文:中文 附带品:词汇测
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
This was the flight of the Boeing X51A Waverrider. The company and the US military says its made aviation history. The unmanned craft achieved the longest ever hypersonic flights by a jet fuelled-propelling. It hurtled alone at 5 times the speed of s
Sorry,thereisnottexttemporarily,Pleasehelptingroomtolookforit! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thankyou !
图片1
图片1
图片1
图片1
图片1