通过对高速弹性机构振动波数谱的分析， 揭示了机构振动与声辐射性能的内在关系。
The relationship between the vibration and the sound radiation of the mechanism was revealed through wave number analysis.
将逆时间和空间傅立叶变换应用于估计频率-波数谱，从而产生该地震数据的轨迹内插。
An inverse temporal and spatial Fourier transform is applied to the estimated frequency-wavenumber spectrum, generating trace interpolation of the seismic data.
然而平均垂直波数谱显示了明显的季节变化，在夏季，平均谱具有饱和特性；在冬季，平均谱具有非饱和特性。
However, the mean vertical wavenumber spectra reveal a significant seasonal variation: the mean spectrum in summer has saturated features, whereas the mean spectrum in winter has unsaturated features.
用波数-频率谱传递函数表征包括弹性板和流体负荷在内的整个系统的特性，导出了噪声场互谱函数的一般表示式。
Using the wavenumber frequency transfer function to describe the whole system consisting of the plate and the liquid loading, a general expression of the cross spectrum was derived.
使用三角形截断，截断波数为10的五层全球谱模式研究地形对季节内振荡的影响。分析了有地形和无地形模式模拟的一年带通滤波资料。
Based on the triangle truncation at wavenumber 10, a study is made of the topographic influence on the intra—seasonal oscillation (ISO) in terms of a 5—level low—order global spectral model.
使用三角形截断，截断波数为10的五层全球谱模式研究地形对季节内振荡的影响。分析了有地形和无地形模式模拟的一年带通滤波资料。
Based on the triangle truncation at wavenumber 10, a study is made of the topographic influence on the intra—seasonal oscillation (ISO) in terms of a 5—level low—order global spectral model.
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