为什么真空保温瓶阻断热传导而不是抗辐射有用?
因为热传导传热量大,而辐射传热量小!
辐射传热量就那么小,效率是100%又有什么用?
为什么真空保温瓶阻断热传导而不是抗辐射有用?
因为热传导传热量大,而辐射传热量小!
辐射传热量就那么小,效率是100%又有什么用?
• 啥?你听说过真空保温瓶吗? -iwbb- ♀ (2205 bytes) () 11/20/2011 postreply 23:32:06
• 看见咱的数据的小数点了吗?你给出的计算数据的0太多,肯定不准确! -iwbb- ♀ (0 bytes) () 11/21/2011 postreply 05:20:11
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