邊際頻數率 的英文怎麼說
中文拼音 [biānjìbīnshǔlǜ]
邊際頻數率
英文
marginal frequency- 邊 : 邊Ⅰ名詞1 （幾何圖形上夾成角的直線或圍成多邊形的線段） side; section 2 （邊緣） edge; margin; oute...
- 際 : Ⅰ名詞1 （靠邊的或分界的地方） border; boundary; edge 2 （里邊; 中間） inside 3 （彼此之間） betwe...
- 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
- 數 : 數副詞（屢次） frequently; repeatedly
- 率 : 率名詞（比值） rate; ratio; proportion
- 邊際 : （邊界; 邊緣） limit; bound; boundary
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It is shown by structural seismic response of four wavelets that littlewood - paley wavelet is not suitable for structural seismic response, because structural response is too small, meyer wavelet is a better wavelet for structural seismic response, for it ' s structural response is agreement with the finite element method, and also harmonic wavelet, structural response under earthquake is a little bigger than finite element method, structural response under odd exponent wavelet is also bigger than finite element method, this method is very simple by wavelet transform, wavelet transform method is different from old methods, one is with which not only knows the effects of earthquake wave detail frequency - band on structural response, but also considers earthquake wave ' s non - stationary of frequency and time - domain value, another is the second mode shape and higher mode shape response that do n ' t attenuate so fast
通過對這四種小波的結構地震反應分析研究說明： littlewood ? paley小波不適合於用來作結構地震反應分析，因為在littlewood ? paley小波下的結構地震反應太小，不符合實際情況；用meyer小波作結構地震反應分析比較合適，和有限元法的結果比較接近；也可以用諧波小波來作結構地震反應分析，只是在諧波小波下的結果略為偏大；單邊指數小波下的結構地震反應分析比有限元法稍大一點，它通過小波變換大大簡化了結構地震反應分析。用小波變換方法來進行結構地震反應分析和以往方法不同的是：它不僅可以知道地震波的具體頻率段對結構反應的影響，而且同時考慮了地震波的幅值非平穩性以及頻率非平穩性；另外與以前方法得到的結果有差異的是，第二振型及以後的高一點的振型的反應沒有以前的方法衰減得快。Last, two schemes have been put forwarded for the calculation of initial conditions in mathematic model. for the first scheme, the initial conditions are calculated through one - dimensional mathematic model by the frequency combination of rising and falling tides. for the second scheme, the initial conditions are obtained from measured data
工程建設影響數學模型計算邊界條件分兩方面，一方面由漲、落潮頻摘要率組合分析，通過一維數學模型計算，給出非常不利組合的設計邊界條件，一方面由實測典型年給出實際發生情況的邊界條件。
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