頻遇值 的英文怎麼說
中文拼音 [bīnyùzhí]
頻遇值
英文
frequent value-
First of all, the emd - based wavelet threshold denoising algorithm is apllied to denoise noisy structural response data to reduce the effect resulting from noise. during the process of the empirical mode decomposition ( emd ), the two boundaries of the response signal are processed with semi - periodical ? semi - symmetrical method. subsequently, hilbert - huang transform ( hht ) is used in identifying structural intrinsic frequency
這套技術用以解決實際工程應用中遇到的在信噪比較低情況下通過結構的響應信號來進行結構損傷識別問題，即先用基於emd的小波閾值去噪演算法對含噪結構響應進行去噪處理，以有效降低噪聲影響（在去噪的emd處理過程中，對信號的邊界採用「半周期半對稱」延括演算法來抑制邊界誤差） ，然後再用希爾伯特?黃變換（ hht ）進行結構的固有頻率識別，最後計算出結構剛度。It is showed by numerical calculation that the waves amplify becomes great and the width of waves becomes narrow after the collision or chase of two solitary gravitational waves. the results indicate that the nonlinear interaction between the gravitational waves may be one of the causes for outbreak of severe convective weather. furthermore, by comparing once shear with second shear, we find that it is easier to breaking up or energy dispersion for the solitary gravitational waves by the nonlinear action when the distributing of basic flow is once shear
引入實際基本氣流，分別討論了具有垂直一次切變和二次切變流時兩個非線性重力波相互作用的數值計算過程，得到兩個重力波波包相遇或相追都會使波包的振幅增加、波寬變窄；進一步分析表明，有高空急流存在的條件下，非線性重力波的相互作用更易使波包破碎、能量頻散，激發強對流天氣的形成。
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