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1·For periodic waveforms, the Fourier series representations are valid over all time.

对于周期波形，傅立叶级数表示法在整个时间段都是有效的。

2·Rayleigh reflectance can be approximated using Fourier series relevant to angles and wavelength.

其中，瑞利反射率可以用与角度和波长有关的傅立叶级数近似。

3·Such series (e. g., the Fourier series) are particularly useful in solving differential equations.

有的级数(如傅立叶级数)用来解微分方程序特别有用。

4·A periodic function, finite Fourier series, is used to activate the actuator for obtaining training samples.

用周期函数，有限项傅立叶级数，作为激励函数来获取训练样本。

5·Further, by double FOURIER series expansion and intricate derivation, strict output analytic solution is acquired.

针对模型，通过双fourier级数展开和繁琐的数学推导，求得了输出电压的严格解析表达式。

6·With a view to the periodicity of human gait, experimental data maybe expressed in the form of the Fourier series.

考虑到人体步态的周期性，步态实验的数据可以表示成富里哀级数的形式。

7·The Fourier series are also used for dealing with the problem of the sectional continuous load along radial direction.

还用富里叶级数处理沿径向分段连续荷载的问题。

8·In order to analyzing digital signals with the aid of computers, it is necessary to use Fourier Series of discrete form.

为在计算机上做傅里叶级数的分解，需要对连续信号进行抽样，然后按离散傅里叶级数进行分解。

9·The application of the Fourier series with supplementary terms ensures that the arbitrary boundary conditions can be satisfied.

应用带补充项的富氏级数法是为了满足任意的边界条件。

10·This paper presents the fold line approximation method of discrete Fourier Series, and conducts calculation formula of harmonics.

提出了计算离散傅氏级数的折线逼近法，并导出了其幅值计算式。