熱輻射的速率問題....:－2016韓國代購網 , 韓國代購化妝品 , 韓國代購批發 , 韓國代購教學---韓國代購/追加/寄貨

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熱輻射的速率問題....

Jul 11th 2013, 17:30

題目是這樣的，不知道怎麼判斷~~

下列的固體均以相同材料製成，有相同的溫度300K，並處在同樣350K的環境下：邊長r的立方塊，半徑r的球體及半徑r的半球體。
試依其與環境交換熱輻射的速率，由大到小排列這些物體。

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