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看它的形狀應該是透過反射自己所發出的聲音去抵消後來發出來的聲音(人在吼的時候, 每個字的頻率都差不多)或者是內部有吸音材質或是兩者都有不過...蓋棉被不是一樣嗎...
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Reader Comments (Page 1 of 1)
Michael @ Jul 15th 2008 10:19AM
看它的形狀應該是透過反射自己所發出的聲音去抵消後來發出來的聲音
(人在吼的時候, 每個字的頻率都差不多)
或者是內部有吸音材質
或是兩者都有
不過...蓋棉被不是一樣嗎...