The phase of the test object can be extracted by Fourier transform.
物面的相位由傅里叶变换法求得。
As the base of them, Fourier transform is the foundalist and the most important one.
作为三大变换之基础的傅立叶变换，是信号与线性系统的一个最基本，最重要的变换。
As the base of them, Fourier transform is the foundalist and the most important one.
作为三大变换之基础的傅立叶变换，是信号与线性系统的一个最基本，最重要的变换。
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