Luxuriant spectrum chapter. How does have vanished at that moment.
华丽的谱章，是不是也会有消逝的那一刻。
The Fourier spectrum of the wave moment shows that high frequency components will appear and they may cause ringing.
分析结果表明，极端波浪作用下的波浪力矩包含高频成分，是结构物可能产生高频共振响应的原因。
Second, a special 2-D the fourth-order time-average moment spectrum is defined to estimate frequency in zero mean multiplicative and additive noise.
定义了特殊的二维四阶时间平均多矩谱来估计信号频率。
Power spectrum analysis and statistical moment function on a range of scales revealed scaling qualities of the date from stock market.
通过对幂谱和统计矩函数的分析，得出股票市场时间序列的无标度性。
Because the Local wave T-F spectrum can be showed in the gray image, so we use the moment invariants of time-frequency image as the fault features.
由于局域波时频谱可以表示为灰度图像。因此，利用图像信息的不变矩进行故障特征提取。
Results shown the continued attenuation of the dipole moment in the last 50 years, and the variation of spatial spectrum of geomagnetic field continuously decreased.
研究中发现最近50年偶极矩仍在继续衰减，空间功率谱的变化也呈减小趋势。
Results shown the continued attenuation of the dipole moment in the last 50 years, and the variation of spatial spectrum of geomagnetic field continuously decreased.
研究中发现最近50年偶极矩仍在继续衰减，空间功率谱的变化也呈减小趋势。
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