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    人類的老師450字日記

    時間:2015-03-13 10:59:07來源:未知 作者:天天日記
    請記住本站的網址:www.whkqy.com

    人類的老師450字日記

    3月8日 星期日 晴
      在一個炎熱的星期天,我和媽媽一起去公園玩耍,突然看見一只五顏六色的蝴蝶在花叢中悠閑地飛著,立刻就有一個大問題從我腦子里冒出來,這么熱的天氣,難道蝴蝶就不感覺到熱嗎?不一會兒蝴蝶飛入了另一片花叢里,咦?蝴蝶飛到那里去了呢?我怎么找也找不到。我帶著這個疑問回到家,打開電腦一查,哦,原來是這么回事。
      你們是否想到,人造衛星控溫系統的靈感是來自小小的蝴蝶。當陽光強烈照射時,衛星表面的溫度會高達2000度,在陰冷的地方衛星表面溫度會降到零下200度,這種忽冷忽熱的氣溫對衛星里面的儀器帶來極大的危害。人們發現,蝴蝶身上長著一層細小的鱗片,有調節體溫的作用。科學家根據蝴蝶鱗片可以調節體溫的原理制造了衛星的控溫系統。
      蝴蝶還有一個作用可以用到軍事上。五彩的蝴蝶,它的后翅在陽光的照耀下,變得時而金黃,時而翠綠,有時還由紫變藍。科學家通過對蝴蝶色彩的研究,對軍事防御帶來了極大的益處。在二次戰爭期間,德國企圖用轟炸機炸毀蘇聯的軍事基地,蘇聯的一個昆蟲學家利用蝴蝶在花叢中不易被發現的道理,在軍事基地上覆蓋了一種蝴蝶花紋,德軍費勁了心思也沒有找到蘇聯的軍事基地。后來人們還利用蝴蝶原理發明了迷彩服,避免了士兵的大量死亡。
      小小的蝴蝶作用真大啊,不愧是人類的老師。
     




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