second order difference 中文意思是什麼

second order difference 解釋
二階差分
  • second : adj 1 第二的；第二次的；二等（的）。2 次等的；較差的；劣於…的 （to）。3 〈美國〉較年輕的。4 另一...
  • order : n 1 次序，順序；整齊；（社會）秩序，治安；狀況，常態；健康狀態；條理；會場秩序；議事程序，日程；...
  • difference : n. 1. 差異，差別。2. 不和，爭論。3. 【數學】差，差額。4. 【邏輯學】特殊性。vt. 〈罕用語〉區別，使有差別。
  1. Having analyzed preliminarily formation mechanism of these common characteristics of anomaly, it concludes that : these are results, controlled by basically united tectonic stress field of large - range, caused by stress - strain accumulation and certain phase strong earthquakes, according to deformation difference brought about in tectonic position along the boundary zone and within second - order faults of active blocks resulted from unstable and inharmonious features for movement of block system at different levels and deformation of boundary

    分析這些異常共性特徵的形成機制，初步認為：是在基本統一的大區域構造應力場控制下，不同層次塊體系統運動及其邊界帶變形的非平穩、非協調性，在活動地塊邊界地帶和地塊內部次級斷裂構造部位產生變形差異而導致應力-應變積累、孕育強震到一定階段的結果。
  2. The viscid flux is discretized by second - order central difference scheme. baldwin - lomax turbulence model is implemented in navier - stokes flow solver. for steady - state calculations, a four - stage runge - kutta scheme with convergence acceleration techniques such as local - time stepping and implicit residual smoothing is used

    其中，定常計算中的時間推進採用四步runge ? kutta方法，並應用了當地時間步長、隱式殘值光順等加速收斂措施；非定常計算中的時間推進採用jameson的隱式雙時間方法。
  3. The details of the construction and characteristics of the new finite - difference scheme are presented in this thesis, by using both the integration theorem and the taylor expansion theory. it is proved that the new approach has the second - order accuracy on the grids with axis - symmetric voronoi cells and at least has the first - order accuracy in general. according to this character of the scheme and the computational requirements of the finite - difference approach, a striping procedure is involved to decompose the velocity model into variable spatial size grids with a nearly constant tune step preserved

    本文從積分定理和taylor展開兩個角度，詳細分析了基於voronoicell的非規則網格有限差分演算法的構造過程及性質，並且在理論上證明了本文的差分方法的精度與網格形狀的關系：當voronoicell為關于節點的軸對稱圖形時，本文差分方法具有二階精度；在一般的網格上，則至少具有一階精度。
  4. Through analysis and simulation, it is proven to be suitable for enlarging the small - angle - difference to use the first and the second order blaze of the grating

    通過分析和模擬，使月光柵的1 、 2級閃耀對入射時微小角度差進行放大比較適宜。
  5. Oscillation of second order difference operator

    一類二階差分運算元的振動性
  6. Oscillatory and asymptotic behaviour of unsteady second - order difference equation

    不穩定型二階差分方程解的振動性及漸近性
  7. Positive solutions of second order difference equations with positive and negative coefficients

    具正負系數二階差分方程的正解
  8. An existence theorem of solution to boundary - value problem governed by second - order difference equation

    二階差分方程邊值問題的一個存在定理
  9. The dispersive influence, especially the influence of the second - order and third - order dispersion, is researched first. in this part, the influence of the third - order dispersion on the super - gaussian pulse is mainly discussed, and the difference between gaussian and super - gaussian pulse is also qualitatively discussed ; the effect of the initial chirps is researched

    從而，本文首先對色散效應進行了研究，分析了二階和三階色散對光纖中光脈沖波形的影響，其中著重研究了三階色散對超高斯型光脈沖波形的影響，定性地分析了其與高斯型光脈沖波形演變的不同，並對初始啁啾的影響進行了闡述。
  10. Non - oscillatory and non - free - parameters dissipative ( nnd ) finite difference scheme ( a total variation diminishing scheme ) with second order accuracy was adopted to solve the fluid dynamic equations, a finite rate chemical reaction model was developed to calculate ingredient producing rate, and an adi over relaxation iteration technique was used to solve the electromagnetic discretized equations

    採用二階精度nnd格式求解流體力學方程組，採用有限速率化學反應模型計算組分生成率，採用交替方向隱式（ adi ）超鬆弛迭代法求解電磁場離散方程。
  11. The anisotropic property of the generalized difference methods has not been studied until now. in this paper, the anisotropic property of a kind of generalized difference methods is analy - sized and its error estimate is obtained without the limitation of regularity. finally, the numerical examples show that the theoretic analysis is right. in addition, based on the 2 - dimensional quasi - wilson element, the quasi - wilson element in the 3 - dimensional space with application to second - order porblem is presented. lt is proved that it is convergent for arbitrary hexahedron regular subdivision in 3 - dimensional space, and its error estimate is obtained

    本文結合各向異性有限元的研究成果，對基於矩形剖分的一類廣義差分法進行了各向異性分析，給出了與剖分的正則性無關的收斂階估計，並進行了數值試驗，表明這類廣義差分法具有各向異性特徵，可以用於窄邊問題的計算。
  12. Asymptotic behavior for second - order nonlinear difference equations

    二階非線性差分方程的漸近性
  13. Second order upwind difference scheme for miscible displacement problems in porous medium

    多孔介質中混溶驅動問題的二階迎風差分格式
  14. Efficiency and accuracy of stability - guaranteed second - order difference scheme in full - multigrid method

    問題的二階混合差分法
  15. Oscillatory behavior of second order nonlinear difference equations

    一類二階非線性差分方程解的振動性
  16. By citing a series of counterexamples, e demonstrate in section 5 that famous indian scholar e. thandapani ' s and american scholar k. ravy ' s classification methods are essentially, rong for second order quasi - linear difference equation, ith damped term in " computers and mathematics, ith applications ", state ne, results and solve completely the problem for the classification of this kind of equation

    通過列舉一系列的反例，我們在第五節指出，著名的印度學者e thandapani和美國學者k ravy在《 computersandmathematicswithapplications 》上關于具有強迫項的二階擬線性差分方程非振動解的分類方法是根本錯誤的，給出了新的結論，完整地解決了這類方程的分類問題。
  17. Uniform second - order pointwise convergence of a hybrid difference approximation for a singularly perturbed robin problem

    基於非均勻網格求解非線性對流擴散問題的一種高精度差分格式
  18. Oscillation of second order self - conjugate nonlinear difference equations

    二階自共軛非線性差分方程的振動性
  19. Some new sufficient conditions for all the solutions of the nonlinear damped the second order difference equations ( 1 ) to be oscillations are given

    摘要本文給出了二階非線性阻尼差分方程（方程式略）一切解均為振動的若干新的充分條件。
  20. In section 4, e point out and correct some existing errors for the asymptotic behavior of nonlinear second order difference equation in " applied mathematics letters ", and make some ne, conclusions

    在第四節我們指出並糾正《 appliedmathematicsletters 》上關于非線性二階差分方程漸近性的錯誤，並給出了新的結論。
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