Nad? ?v,g(?)??vdq?m?0g(?)d??N,?m???m?v a
令?D?kB,x???kBTCvLkB2T???vHDT?0exx2(ex?1)2dx
低温下T??HD,
HD??x TCv5.
T?NkBHD?L?kB2T dx??x23?ve?1)0(x2
6
7
Nad? ?v,g(?)??vdq?m?0g(?)d??N,?m???m?v a
令?D?kB,x???kBTCvLkB2T???vHDT?0exx2(ex?1)2dx
低温下T??HD,
HD??x TCv5.
T?NkBHD?L?kB2T dx??x23?ve?1)0(x2
6
7
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