近似展開 的英文怎麼說

中文拼音 [jìnsìzhǎnkāi]
近似展開 英文
approximate expansion
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 近似 : approximate; similar; approach; approximation; roughness; propinquity
  1. Books on the patria cycle include the theatre of confluence arcana editions, patria : the complete cycle, coach house press in 2002, and the newly published childrens storybook version of the enchanted forest, written by schafer and illustrated by diana smith in 2005. an accompanying cd features murray schafer narrating the story, supported by la jeunesse choir under the direction of marie anderson, and soloists eleanor james and sarah ormerod

    隨著劇情的展開，歌唱家優美的歌喉與樂隊交織在一起，高潮此起彼伏，在上半場快要結束的時候，突然一切靜了下來，只聽到微微的鳥叫蟲鳴，此時從湖邊的森林里傳來了幽幽的女生合唱，純美聲音由微弱漸漸地加強，由遠而近，好似由天國里傳來的歌聲，把觀眾帶入到另一個美妙的世界里。
  2. By introducing proper stretchy variable and constructing boundary layer function, it concludes n - order approximate solution, and using theory of differential inequality, uniformly validity of asymptotic expansion is proved

    通過引進適當的伸長變量，構造邊界層函數，得到了解的n階近似值，並利用微分不等式理論證明了解的漸近展開式的一致有效性。
  3. Following is our main work and important conclusions : ( 1 ) the question of energy spectrum hardening. we used the klein - nishina ' s differential scatter formula, meanwhile utilize the thaler progression to spread out, and neglected the high - power, and then we deduced a theoretical formula of correction of energy spectrum hardening

    其主要工作和結論如下： （ 1 ）對x射線能譜硬化問題，把klein - nishina微分散射方程，利用泰勒級數展開，在忽略高次項的情形下，近似地推導出了能譜硬化修正公式。
  4. The main results achieved in this thesis can be summarized as follows : 1. by means of the fourier series expansion, an approximate analytical propagation equation of flattened gaussian beams ( fgbs ) passing through an apertured paraxial abcd optical system is derived, and illustrated with numerical examples, when the transmissivity of the aperture is t ( x ) = cos ( x )

    用傅立葉級數展開法研究了平頂高斯光束通過有光闌限制的近軸abcd光學系統的傳輸特性，導出了光闌透射率為t （ x ） = cos （ x ）時的近似解析傳輸公式，硬邊光闌的情況可作為= 0的特例得到。
  5. Kalman filter is an optimal filter algorithm in the minimum - mean - square - error sense, meanwhile extended kalman filter is a sub - optimal filter algorithm, which derived from the linearization of nonlinear system using taylor expansion. while the non - linearity of the system is not extreme strong, ekf can achieve approximately optimal filter effect

    Kf是最小均方意義下的最優濾波演算法， ekf則是利用一階泰勒展開將非線性系統線性化而得到的一種次優濾波演算法，在非線性不是特別嚴重的情況下， ekf有著近似最優的濾波效果。
  6. This is analogous to the successive approximation given by the terms of a taylor expansion.

    這類似通過泰勒法展開各項所給出的逐次逼近法。
  7. In this paper, we expand eigenvalue of poisson equation using bilinear element, by the formulation of the error expanition, we can conclude that it is a upper bound. and by two numerical example, we computer the approximate eigenvalue of poisson equation in square and l - shape domains, then we analyses the approximate eigenvalue. we also extraplate the error expansion and enhance the accuracy of the eigenvalue form the second order to the forth order

    本論文對poisson方程的特徵值採用雙線性元進行展開，得到了誤差展開式，通過誤差展開式，我們能得到特徵值是上界。通過數值算例，計算方形與l形區域上的poisson方程的近似特徵值，並對數據進行分析，驗證了理論的正確性，然後通過對誤差展開式外推，收斂級數可以從二階提高到四階，得到了高精度的解。
  8. Two test methods are employed : one is loading the samples before thawing, and the other is loading the samples after completely thawed. the coefficient of thaw settlement as a function of granule, as a function of water, and also as a function of dry density are protracted ; besides, the consolidation coefficient of thawed samples as a function of granule, as a function of water, and as a function of dry density are protracted. we can discover from the test results that the thaw - settlement coefficient and the consolidation coefficient of thawed samples are mainly relevant to the granule, dry density and the water content they have little to do with the geology and geography factor of the frozen soils

    為了研究季節凍土區工業民用建築的基礎淺埋穩定性問題，特開展了有關季節凍土的融化壓縮特性的研究，先後在內蒙古農業大學三個比較典型的建築地點取了將近三百個試樣，在室內進行試驗，採取兩種試驗方法即先融化后壓縮試驗法和同時融化壓縮試驗法，通過對這三個不同地點的兩種不同的試驗方法的試驗結果進行對比分行，分別繪制了融沉系數與凍土的含水（冰）量、干容重以及顆粒級配的關系曲線;融化壓縮系數與凍土的含水（冰）量、干容重以及顆粒級配的關系曲線，由試驗結果發現凍土的融沉系數和融化壓縮系數都與凍土的含水量呈正向相關關系，可近似的用線性方程來表示;兩種實驗方法的總沉降量與凍土的含水量呈正向相關關系，與凍土的干容重呈反向相關關系，也可以近似的用線性方程來表示。
  9. We expand the eigenvalue of possion equation using wilson nonconforming element. by the formulation of the error expanition, we can not conclude whether it is a upper bound or a lowr bound. but we guess it is a lower bound, and by two numerical example, we find thatwe are right. we also extraplate the error expansion and enhance the accuracy of the eigenvalue from second order to third order

    通過數值算例，計算方行與l行區域上的poisson方程的近似特徵值，並對數據進行分析，驗證了我們的推測是正確的，然後通過對誤差展開式外推，收斂階數可以從二階提高到三階，得到了高精度的解。
  10. This work gives amsotropy surfaces of three collision systems he - hf, he - hcl, he - hbr. comparing theoretical results with experimental ones has carried out the discussion on feasibility of adapted potential model. all differential cross sections ( dcs ), partial wave cross sections ( pcs ) and total scattering cross sections ( tcs ) have been achieved by using close - coupling approximation method to calculate the three systems, and results above have also been discussed and analyzed

    首先，具體介紹了理論計算方法? ?密耦近似方法，接著討論了各種勢能模型的優缺點，利用孫桂華改進的勢能模型? ? ms勢，分別給出了he - hf 、 he - hcl 、 he - hbr三個碰撞體系的各向異性勢能面，並結合計算結果與實驗結果的比較，對所採用的勢能模型的可行性展開了討論；用密耦近似方法對he - hf 、 he - hcl和he - hbr三個碰撞體系進行計算，得出了各種微分散射截面、分波截面和總散射截面，並將計算結果進行討論和分析。
  11. Under appropriate assumptions, the existence of solution is proved by means of the theory of differential inequalities and the uniformly valid asymptotic expansion for arbitrary nthorder is obtained

    在適當的條件下，利用微分不等式理論證明?解的存在性，得到?解的任意階近似的一致有效漸近展開式。
  12. The innovations of this thesis are as the follows : 1 ) it is analyzed that the lower - order jacobi - anger expansion model for an incoherently distributed source has better accuracy performance than some other approximate source models such as space frequency model, two - point source model, and low - rank approximate model. using the parametric decoupling property of the ja - based model, a novel angular parameter estimator is proposed, which is very robust in case of large angular spreading

    本文從這三個方面開展了空間分佈源波達方向估計研究，創新點包括： 1 ）分析了低階jacobi - anger級數展開近似模型的誤差性能；利用該近似模型的參數解耦特性，提出了一種新的波達方向估計器，在大角度擴展條件下，該估計器表現非常穩健。
  13. The standard parabolic equation method was obtained by the decompocition of the scalar wave equation and the expansion of the pseudo - differential operator

    通過對傳統波動方程的分解和偽微分運算元的近似展開，獲得了標準拋物線方程。
  14. Applying the above - mentioned method, the author developed an approximate developing - mapping system based on catia v5 using vb, realized the development computing of panel surface and auto - drawing of developed shape in catia, dealt with the problem : getting mesh data from analysis & simulation module of catia, picking up structure information data in iges, showing 2d developed model in catia

    應用上述幾何展開演算法，作者基於windowsnt 2000 xp系統和catiav5平臺用visualbasic開發了一套「不可展曲面近似展開和內部結構信息映射系統」軟體，簡稱demaps系統，實現了飛機壁板類零件的展開計算和展開圖形自動繪制。
  15. In connection with the researches carried out in our laboratory, the description is concentrated on the high accurate four - component relativistic density functional methods with relativistic effects taken into account strictly, and the two - component or scalar relativistic density functional methods with relativistic effects considered approximately, involving the zero - order regular approximation ( zora ) method and its improved variants, the singularity excluded approximate expansion ( seax ) method, and the jointed two component - scalar relativistic ( or non - relativistic ) approach applicable to the calculations of large systems locally containing heavy elements

    結合本實驗室的研究工作，重點介紹嚴格處理相對論效應的四分量相對論密度泛函計算方法和近似處理相對論效應的兩分量和標量相對論密度泛函計算方法，包括零級規則展開近似（ zora ）方法及其改進和排除奇點的近似展開（ seax ）方法，以及適合處理局部包含重元素大體系的接合兩分量標量相對論（或非相對論）計算方法。
  16. Author, secondly, starts from the approximate expandness of square root operator, perform mathematical calculations for finite difference operator in frequency - space domain, fourier finite difference operator in mixing domain ( frequency - space and frequency - wavenumber domain ) and general screen operator in mixing domain, compare and discuss their precision of their wavefield, adaptability for lateral velocity variations, computation efficiency and stability. thirdly, author, applies the steady variational reference slowness rytov approximation general screen wavefield extrapolation operator ( vrselrf ) in frequency - wavenumber domain, to the prestack and poststack forward modeling and depth migration

    第二，從平方根運算元的近似展開出發對頻率?空間域的有限差分運算元、混合域（頻率?空間域；頻率?波數域）的fourier有限差分運算元、混合域的廣義屏運算元進行了推導並對其波場描述精度、對橫向變速的適應性、計算效率和穩定性進行了比較與評述。
  17. Abstract : based on the basic concept of the revolving shell, the equation of the middle surface generatrix of the approximate ellipsoid portion of the ellipsoidal head is derived, the unwrapped area and the unwrapped diameter of the ellipsoidal head are calculated, the result is compared with that of derived from the real ellipsoid and that of calculated from the empirical equation, relative chart and code are given out, which could be used by manufactures for reference

    文摘:根據回轉殼體的基本概念，推導了橢圓封頭的近似橢圓殼部分的中面母線方程，據此推導計算了橢圓封頭的展開面積及展開圓直徑，並根據橢圓殼幾何形狀推導的結果與經驗公式所得結果進行了比較，給出了有關圖表及計算程序，可供製造單位參考使用。
  18. Chapter 5 directly sets out from the green formulae of velocity potential due to the existence of lifting force, adopts an approximate kutta condition and firstly calculates the maneuvering hydrodynamics of a wigley ship with an attack angle using the present method of b spline

    由於有升力的存在，第5章直接從速度勢格林公式出發，並採用了一種近似的kutta條件，首次採用b樣條邊界元方法對作斜航船武漢理} _人學博十學位論文體的操縱水動力開展了數值計豹
  19. Under this background, this paper has developed the researches on the structural optimum design based on genetic algorithms and on the structural approximate analysis based on artificial neural network

    為此，本文開展了基於遺傳演算法的結構優化設計的研究以及基於人工神經網路的結構近似分析的研究。
  20. And the newly developed method of lame function method in solving the multi - order approximate equations of nonlinear evolution equations is also discussed. and following equations are solved in this method : nonlinear schr dinger, bbm equation, zakharov equation, kp equation, boussinesq equation and cubic nonlinear schr dinger

    最後介紹在橢圓函數展開法基礎上發展而來的，利用lam函數求解非線性發展方程多級近似解的方法，並且求解了非線性schrdinger方程，非線性bbm方程， zakharov方程， kp方程， boussinesq方程和立方非線性schrdinger方程等方程。
分享友人
分享到 Line

分享到臉書