lifting theorem 中文意思是什麼
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In the second part, firstly, the mathematical model for predicting hydrodynamic characteristics of varivec propeller under steady or unsteady condition are present, based on the general propeller lifting - surface theory, potential flow theory and green theorem. then, theoretical calculation methods for predicting hydrodynamic characteristics of varivec propeller designed above paragraphs are present, based on the finite basic solution method, the unsteady vortex lattice method and hess - smith method
在理論計算部分，本文首先基於常規螺旋槳升力面理論、勢流理論和格林定理建立了定常和非定常狀態下全方向推進器水動力性能計算的數學模型，然後利用有限基本解法、非定常渦格法和赫斯?史密斯方法對全方向推進器定常和非定常狀態下的數學模型進行了數值離散，接下來針對前面所設計的全方位推進器進行了數值預報。 -
Through presentation and discussion of traditional wavelet construction with lifting scheme, the multiwavelet construction with lifting scheme is introduced. the extension of vetterli - herley theorem under multiwavelet condition is overall proved in detail. based on equivalent scalar filters banks, a kind of multiwavelet construction with lifting scheme and corresponding theorem are proposed
通過介紹基於提升格式構造傳統小波的內容，引入基於提升格式構造多小波的研究，對vetterli - herley定理在多小波中擴展進行詳細全面地證明，提出了一種基於等效標量濾波器組的提升格式構造多小波的實現框架和定理，並通過實例驗證該方案的可行性。 -
Based on lifting scheme and cohen - daubechies - feauveau theorem constructing biorthogonal wavelets, we construct a new symmetric biorthogonal 9 7 tap wavelet ( ls97 ). the compression performance of the ls97 wavelet is almost the same as that of cdf 9 7 wavelet, which is adopted by jpeg2000. furthermore, the inverse of ls97 wavelet can be replaced by cdf 9 7 wavelet in image compression, and vice versa
以構造雙正交小波的cohen - daubechies ? feauveau定理為基礎，利用提升方法設計了一組對稱雙正交9 / 7小波濾波器，它與jpeg2000中採用的cdf9 / 7小波壓縮性能幾乎相同，並且它們兩者在圖像壓縮中可以互相做正變換與逆變換。
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