邊際頻數 的英文怎麼說

中文拼音 [biānjìbīnshǔ]
邊際頻數 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
  • 邊際 : （邊界; 邊緣） limit; bound; boundary
  1. 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。
  2. Finally in chapter 6, the problems of boundary conditions and incident wave, as the most valuable problem of mrtd as a time - domain method, are studied. this chapter presents the simulation results of the electromagnetic propagation and its interactions with the dielectric slab and analyse of the graph of the reflection coefficient in frequency. compared with fdtd results, the numerical results, obtained using the mrtd method, show the directness and conciseness of mrtd as a time - domain method and the advantages in grid enlargement and saving computer resource etc.

    最後，第六章討論了mrtd作為時域數值技術最具實際應用價值的邊界條件設置和入射波加入等問題，並給出模擬電磁波傳播過程和介質板反射系數頻譜分析，其數值結果表明了mrtd作為時域方法的直觀簡練，與fdtd方法的結果比較，顯示了其在擴大網格、節省計算資源等方面的優勢。
  3. 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。
  4. We analyzed statistic characteristics of single mpeg vbr video stream and construct its traffic model, which can fit distribution function and auto - correlation function of video sequence very perfectly ; we also established aggregated mpeg vbr video stream model based on alpha - stable similarity process

    該模型能夠同時擬合視頻序列的邊際分佈函數和自相關函數（一階和二階統計特性） ，這是傳統的網路流量模型不具備的。因此，該模型可以用於網路性能分析和視頻流流量模擬。
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