分析表明波长调制反射谱的实质，是介电函数对能量的一级微商。

It is shown that the wavelength modulated reflective spectrum is essentially the first derivative of dielectric function with respect to the energy.

youdao

本文介绍了滤波器的制作，对滤波函数进行了计算，最后提供了对字符微商的实验结果。

This paper describes the fabrication of the filter and the calculation of the filtering function. The experimental results of pattern differentiation are presented at the end.

youdao