Physical meaning: the self-correlation function and the energy spectrum density function compose a Fourier transform pair.
物理含义：能量信号的自相关函数与能量谱密度函数构成傅立叶变换对。
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。
SQUID. Substituting the formule of the probability current density with the electron-pair wave function, this paper obtains the relation between the magnetic flux of the loop in D.
SQUID的量子干涉效应，将电子对波函数代入在磁场中运动的几率流密度公式，得到在D。
SQUID. Substituting the formule of the probability current density with the electron-pair wave function, this paper obtains the relation between the magnetic flux of the loop in D.
SQUID的量子干涉效应，将电子对波函数代入在磁场中运动的几率流密度公式，得到在D。
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