In harmonic approximation, the specific heat obeys T3 law at low temperature, keeps a constant at high temperature.
在谐和近似下，低温比热符合T3定律，高温比热趋于常数。
This paper gives and analyses a general expression of the dispersion relation of one-dimensional lattice waves in simple harmonic approximation.
给出了在简谐近似下，一维格波色散关系的一般表达式，并对其结果进行了分析。
The calculation method for the vibrational partition sums Qvib used is the harmonic oscillator approximation.
其中，转动配分函数考虑了离心扭曲修正，振动配分函数采用谐振子近似。
The calculation method for the vibrational partition sums Qvib used is the harmonic oscillator approximation.
其中，转动配分函数考虑了离心扭曲修正，振动配分函数采用谐振子近似。
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