...似核 ; 傅里叶系数 ; 傅里叶变换 ; 正弦信号 ; 频率估计 [gap=1267]Key words approximate kernel; Fourier coefficients; Fourier transforms; sinusoid; frequency estimation ..
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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 coefficient model Fourier系数模型
refinement of Fourier coefficient Fourier系数精修
the fourier coefficient 傅立叶系数
sine fourier coefficient 正弦傅里叶系数
cosine fourier coefficient 余弦傅里叶系数
Fourier Series Coefficient 傅立叶级数之系数
Fourier correlation coefficient 傅立叶相关系数
fast Fourier transform coefficient 快速傅里叶变换系数
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A relatively direct method is expounded in this paper to prove the termwise differentiation of power series, and a simple method is expressed to calculate the Fourier coefficient.
用比较直接的方法证明幂级数的和函数在收敛域内可以逐项微分的公式；并得到了计算傅立叶系数的一种简便方法。
This paper selects the algorithm by quantifying the amplitude of the transform domain coefficient and uses this algorithm in the discrete Fourier domain and the discrete cosine domain.
在众多语音信息隐藏算法中，挑选出一种幅度量化的信息嵌入方案，分别在离散余弦和小波变换域上，通过对变换域系数的幅度量化来隐藏信息；
The Fourier analysis method is applied to decompose the air-gap magnetic density into the basic wave and a series of harmonic and wave shape eigen coefficient of air-gap magnetic field are calculated.
采用付立叶谐波分析的方法把气隙磁密分解为空间基波和一系列谐波，进而计算出气隙磁场波形特征系数。
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