In addition, the ray effect in the spherical harmonics approximation mitigates with increasing optical thickness within gray medium.
同时，球谐函数法的射线效应随光学厚度的增加而减小。
This paper presents the fold line approximation method of discrete Fourier Series, and conducts calculation formula of harmonics.
提出了计算离散傅氏级数的折线逼近法，并导出了其幅值计算式。
In this example, a finite sum of harmonics for approximation of a ramp function is demonstrated graphically for the parameter variation of number of total harmonics.
本例图示以有限谐波级数和近似斜坡函数随总谐波数量之变化。
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