你是否曾經(jīng)想知道蒼蠅是怎樣完成這一復雜的飛行技巧，以使其可以附在天花板上？



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選材／校對／翻譯：hqj5715
Next time you spot a fly buzzing around your boudoir, wait a minute before reaching for the fly swatter to check out the incredible aeronautical feats a fly can perform with ease! To stay airborne, a fly has to flap its wings from about two to over three hundred times per second. The speed of repetitive human muscle contractions doesn't even come close. Our muscle fibers can contract only 10 or 11 times per second at most!But, flies aren't just mechanical buzzers. Have you ever wondered how a fly executes the complex, in-flight maneuver that allows it to land upside down on the ceiling? This isn't just a question for lazy, fly-swatting summer afternoons. In fact, before the advent of high-speed photography, there was heated debate among scientists as to exactly how a fly flips over in order to land on a ceiling. High-speed cameras have revealed that a fly performs this feat not like a rigid airplane doing aeronautical tricks, but like a limber circus acrobat entertaining a crowd.
當你下一次發(fā)現(xiàn)臥室里有嗡嗡聲時，在你準備拿蠅拍之間留一點時間來核查蒼蠅可以輕易完成的不可思議的航空壯舉。 為了保持飛行狀態(tài)，蒼蠅必須揮動它的翅膀200到300多次每秒鐘。而這樣的速度，人類的肌肉甚至不能完成一次收縮。我們的肌纖維1秒鐘最多只能收縮10或者11次。蒼蠅并不是機械的飛行器。你是否曾經(jīng)想知道蒼蠅是怎樣完成這一復雜的飛行技巧，以使其可以附在天花板上？ 這并不只是慵懶的、不斷拍打蒼蠅的盛夏下午的問題。事實上，在高速攝像系統(tǒng)出現(xiàn)之前，對于蒼蠅究竟是如何翻轉(zhuǎn)以使其可以附著在天花板上這一問題在科學家中早已存在熱議。高速攝像機已經(jīng)揭示出蒼蠅完成這一壯舉并不是像堅硬的飛機玩雜技表演，而是像一個身體柔軟的雜技演員娛樂大眾一樣。