Meaning: The self-correlation function and power spectrum density Function of a power-typed signal compose a FT pair.

上式表明： 功率型信号的自相关函数与其功率谱密度函数构成傅立叶变换对。

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In order to analyze and evaluate the spectrum restoration property of image restoration algorithms, a new method based on Gaussian function is proposed.

为了对图像复原算法频谱恢复特性进行分析和评价，提出了一种基于高斯函数假设的分析新方法。

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For the magnetic perturbation contribution, we obtain the frequency shift of modes with different degree as a function of the spectrum of fluctuating magnetic field.

如果只考虑磁扰动的贡献，不同值的振动模的频率变化仅只是涨落磁场能谱的函数。

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But I know several professionals who see a wide range of people on the autism spectrum and who have a very different attitude about the relevance of function.

FORBES: Is Asperger's A Vanishing Diagnosis That's Already Lost Its Meaning?