• 飛機舷窗為何是圓形的
    文章來源:未知 文章作者:enread 發布時間:2020-11-08 00:40 字體: [ ]  進入論壇
    (單詞翻譯:雙擊或拖選)
    While not everyone will have pondered the subject while staring out of the window during a flight, the question as to why aeroplanes have circular windows rather than square ones is interesting.
     
    雖然不是每個人都會在飛行中凝視窗外的時候思索一個問題:為什么舷窗是圓形的而不是方形的。但這個問題很有趣。
     
    Over the years, aerospace1 engineering has made huge leaps in aeroplane technology, meaning planes can carry more passengers and go faster. The planes have also changed shape to increase safety – including the windows.
     
    In the 1950s, when jetliners were starting to become mainstream2, the De Havilland Comet[1] came into fashion. With a pressurized cabin, it was able to go higher and faster than other aircraft.
     
    However, the plane had square windows and in 1953 two planes fell apart in the air, killing3 56 people in total.
     
    The reason for the crashes? The windows.
     
    Where there's a corner, there's a weak spot. Windows, having four corners, have four potential weak spots, making them likely to crash under stress – such as air pressure.
     
    By curving the window, the stress that would eventually crack the window corner is distributed and the likelihood of it breaking is reduced.


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    1 aerospace CK2yf     
    adj.航空的,宇宙航行的
    參考例句:
    • The world's entire aerospace industry is feeling the chill winds of recession.全世界的航空航天工業都感受到了經濟衰退的寒意。
    • Edward Murphy was an aerospace engineer for the US Army.愛德華·墨菲是一名美軍的航宇工程師。
    2 mainstream AoCzh9     
    n.(思想或行為的)主流;adj.主流的
    參考例句:
    • Their views lie outside the mainstream of current medical opinion.他們的觀點不屬于當今醫學界觀點的主流。
    • Polls are still largely reflects the mainstream sentiment.民調還在很大程度上反映了社會主流情緒。
    3 killing kpBziQ     
    n.巨額利潤;突然賺大錢,發大財
    參考例句:
    • Investors are set to make a killing from the sell-off.投資者準備清倉以便大賺一筆。
    • Last week my brother made a killing on Wall Street.上個周我兄弟在華爾街賺了一大筆。
    TAG標簽: flight planes aerospace
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