為什麽真空保溫瓶阻斷熱傳導而不是抗輻射有用?
因為熱傳導傳熱量大,而輻射傳熱量小!
輻射傳熱量就那麽小,效率是100%又有什麽用?
為什麽真空保溫瓶阻斷熱傳導而不是抗輻射有用?
因為熱傳導傳熱量大,而輻射傳熱量小!
輻射傳熱量就那麽小,效率是100%又有什麽用?
• 啥?你聽說過真空保溫瓶嗎? -iwbb- ♀ (2205 bytes) () 11/20/2011 postreply 23:32:06
• 看見咱的數據的小數點了嗎?你給出的計算數據的0太多,肯定不準確! -iwbb- ♀ (0 bytes) () 11/21/2011 postreply 05:20:11
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