关键词：傅立叶系数；压缩图谱；苹果糖度；近红外光谱 [gap=870]Key words：Fourier coefficients；feature selection；apple sugar content；NIR
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... Fourier coefficients: 傅立叶系数 Fourier coefficients: 傅利叶系数 warping coefficients: 变形系数 ...
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A useful method is given which can count the least positive period of a continuous function by Fourier coefficients.
给出了一个利用福里哀系数求非常值的连续周期函数的最小正周期的有效方法。
The coefficients are Fourier coefficients to the moment when the orthogonal functions are complex exponential functions.
若正交函数为复指数集，其系数正好是傅里叶系数。
The reliability of the separation of size- and strain-broadening from Fourier coefficients or deconvoluted profile is estimated.
分析了从傅里叶系数或真实线形分离晶粒尺寸和微观应变的可靠性；
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