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 angles will never be very large, as you will see later when we calculate theta maximum, and so we know that we're going to get a simple harmonic oscillation to a very good approximation.
这个角度永远不会很大，当我们算θ最大值时,你会看到,我们将会得到一个很,好的简谐震荡近似值。
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