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20世纪60年代,在波音公司致力于研发世界上最大的四发宽体客机747之时,美国的另外两家飞机制造业巨头——道格拉斯和洛克希德却同时研发两款极其相似的三发宽体客机。此事看来有点匪夷所思,但却事出有因。波音747虽然引领了宽体客机革命,但在其研制初期却是举步维艰。此外,它还带来一个新问题——当时,世界上大部分机场的跑道及起降配套设施还不能满足波音747的要求。道格拉斯和洛克希德看到有机可乘,开始提
In the 1960s, while Boeing was devoted to developing the world’s largest four-passenger wide-body passenger plane, the 747, two other U.S. aircraft manufacturers, Douglas and Lockheed, were simultaneously developing two very similar three-headed Wide-body passenger plane. This seems a little bizarre, but there is a reason. Boeing 747 although leading the wide-body passenger plane revolution, but in the early stages of its development is difficult. In addition, it poses a new problem - at the time, the runways and take-off and landing facilities at most of the world’s airports did not meet the requirements of the Boeing 747. Douglas and Lockheed saw the opportunity and began to mention