approximation solution 中文意思是什麼

approximation solution 解釋
近似解
  • approximation : n. 1. 接近；近似。2. 【數學】近似值。3. 概算，略計。
  • solution : n. 1. 溶解；溶液，溶體，溶劑。2. （補輪胎用的）橡膠水；〈美國〉藥水。3. 解決，解答 （of; for; to）; 解釋；（數學等的）解法，解式。4. 免除，解除。5. 【醫學】消散，消退。
  1. By the polygonal approximation method, a global approximation solution is constructed for the initial - boundary value problem of nonconvex scalar conservation laws with two - side boundary effect, and its convergence to the global weak entropy solution of the corresponding problem is proved

    摘要使用折線逼近法，對具有兩條邊界影響的非凸單個守恆律初邊值問題構造了整體近似解，並證明其收斂到初邊值問題的整體弱熵解。
  2. The importance of the steady state approximation is that it greatly simplifies the solution of the rate equations in complex consecutive reaction pathways.

    穩態近似法的重要性是，它大大簡化了在復雜的連串反應途徑中速度方程的求解。
  3. The thermodynamic free energy on mixing and the spinodal equation in ternary homopolymer blends were obtained by making plausible approximation based on flory ' s equation of state theory. because of the non - linear behavior of the spinodal equation, a numerical solution approach was used and succeeded in solving the problem. spinodal of polystyrene ( ps ) / poly ( vinyl methyl ether ) ( pvme ) / poly ( 2, 6 - dimethyl - 1, 4 - phenylene oxide ) ( ppe ) were simulated over a wide temperature range and the calculated result was coincidence with that of the literature

    將上述方法用於已知狀態方程參數的二元均聚共混體系聚苯乙烯（ ps ） /聚甲基乙烯基醚（ pvme ） ，三元均聚共混體系聚苯乙烯（ ps ） /聚甲基乙烯基醚（ pvme ） /聚2 ， 6 -二甲基1 ， 4 -苯撐氧（ ppe ） ，得到一系列不同溫度下的spinodal相圖，預測結果與文獻報道吻合，在此基礎上進一步研究了聚合物的分子量對體系相行為的影響。
  4. Approximation solution of characteristic equation of guide wave in a semicircle tunnel

    半圓形隧道中導行波特徵方程的近似求解
  5. We must seek two main approximation methods of solution, the variation method and perturbation theory.

    我們必須尋求兩個主要的近似解法、變分法和微擾法。
  6. The centrosymmetric solution of the inverse quadratic eigenvalue problem and its optimal approximation

    一類二次特徵值反問題的中心對稱解及其最佳逼近
  7. The necessary and sufficient condition for centrosymmetric solution of matrix equation was presented and general solutions were obtained. the optimal approximation solution to a given matrix was provided in the solution set

    先討論一類矩陣方程存在中心對稱解的充分必要條件，給出解的一般表達式，並在解集合中給出了與給定矩陣的最佳逼近解。
  8. In addition, the problem of using anti - centrosymmetric matrices to construct the optimal approximation to a given matrix is discussed, the necessary and sufficient conditions about the problem are derived, and the expression of the solution is provided

    並討論了用反中心對稱矩陣構造給定矩陣的最佳逼近問題，給出了該問題有解的充要條件和解的表達式。
  9. So a conclusion can be got that the annealing in n2 raises the la2o2, stability. 3. the exact solution and wkb approximation are compared, the exact solution agrees with the wkb approximation in calculating the mono - layer sio2 tunneling current, but the wkb approximation is inappropriate for the dual layer oxide - lanthanum structure, while the exact algorithm can give a exact result

    比較了wkb和精確解法計算柵介質隧穿電流的方法，精確解法在解決單sio _ 2層和wkb準經典近似有相同的結果，但是wkb不適合計算la _ 2o _ 3 / sio _ 2雙層柵介層的隧穿電流，而精確解法能精確地計算雙層柵介質隧穿電流。
  10. The anti - symmetric orthogonal anti - symmetric solution of a linear matrix equation and its optimal approximation

    一類矩陣方程的反對稱正交反對稱解及其最佳逼近
  11. With the use of the average excitation energy approximation and the closure approximation, the solution is reduced to a time - dependent operator acting on the " bare " atomic state

    利用平均激發能近似和完備關系，可將此波函數簡化為一個含時的相乘算符作用於無場時的「裸原子」態上。
  12. Secondly, the effectiveness and limitation of the classical perturbation, such as the method of multiple scales and the poincare - lindstedt method, are discussed in detail through a duffing oscillator with delayed velocity feedback. it is shown that the two perturbation methods are effective only in solving the approximate solution of the first two orders. an ambiguity or paradox will be encountered when they are used to seeking for the third or higher order approximation of solution

    其次，以一具有時滯速度反饋的duffing系統為例，研究了經典攝動法如多尺度法， poincar - lindstedt法等在求解時滯微分方程級數解時的適用性和局限性問題，指出利用這些方法只能有效求得系統的前兩階近似解，而在求系統的三次以上近似解時會出現矛盾或二義性。
  13. Based on the fourier series digital approximation method, the optimal design of flat - top and high isolation pass band frequency response interleaver has been studied. at last a solution of high isolation ( > 45db )

    用傅立葉級數展開數值逼近的方法進行了高隔離度平頂通帶頻響全光纖奇偶交錯濾波器的優化設計，提出了隔離度大於45db通帶平坦濾波器的製作方案。
  14. In the case that there is only one island that contains an excess electron, we can get the single charge soliton solution of potential distribution in a finite array from the analytic expression we have got. and we find that in the limit of the junction number our result will naturally reduce to the result in the infinite array approximation

    當結鏈中只有一個島上有剩餘電子時，由所得的解析表達式可以得到有限長鏈中電勢分佈的單電荷孤子解，並發現當結的數目趨于無窮大時，這個解將自然過渡到無限長鏈近似下的結果。
  15. Double variable technique is used by kruzkov in 70 ' s to obtain the existence, uniqueness and regularity of entropy solution to ( 0. 2. 1 ) for the scalar case, especially the contractive properity of entropy solution. kuznetsov applied this technique to approximation of scalar hyperbolic conservation laws ( 0. 2. 1 ) in 1976

    Kruzkov 481在70年代用雙變t技巧（ doublevariableteehnique ）解決了多維單個雙曲守恆律（ 0 . 1 . 1 ）的摘解的適定性問題，即嫡解的存在性，唯一性及正規性結果，特別摘解的ll收縮性質
  16. The minimal norm solutions of the equation f4 ( x ) = 0 over srmxm are derived, and also the necessary and sufficient conditions for the existence of and the general expressions of the skew - symmetric solution of the equation f4 ( x ) = 0 are obtained, the related l - s problem f4 ( x ) = min is solved. 5. the necessary and sufficient conditions for the existence of and the general expressions of the skew - symmetric solution of the generalized sylvester equation f5 ( x, y ) = 0 are obtained, and the related optimal approximation solution is obtained, too

    得到了矩陣方程f _ 4 （ x ） = 0在sr ~ （ m m ）上的極小范數解，同時導出了此方程具有反對稱解的充分必要條件和解的通式，解決了相應的l一s問題人（ x ）二min . 5 .得到了廣義sylvester方程兒（ x ， y ） = 0具有反對稱最小二乘解的充分必要條件和解的通式以及解的最佳逼近問題的解，導出了幾（ x ， y ）二0具有置換對稱解的充分必要條件，解的通式及解的最佳逼近問題的解
  17. The new algorithm can get an approximation solution for the scheduling quickly

    這個演算法可以快速地得到這種延誤問題的近似解。
  18. In addition, in the solution set of corresponding equation, the expression of the optimal approximation solution to given matrix is derived

    另外，導出了在矩陣方程的解集合中與給定矩陣的最佳逼近解的表達式。
  19. The formulas of general solution have been given, as well as the formulas of optimal approximation solution and numerical algorithms

    我們給出了他們的通解的表達式，同時還給出了在譜約束下的最佳逼近解的表達式及數值計算方法。
  20. This ph. d. thesis - firstly considers the real asymmetric, real symmetric, bisym - metric, and symmetric and skew antisymmetric matrix extension problems constrained by the matrix inverse problem ax = b. and also considers, in the solution set, of the corresponding matrix extension problems, the optimal approximation solution to a given matrix a *. the necessary and sufficient conditions for the existence of and the expressions for the above problems are derived, and the numerical algorithm and examples to solve the problems are also given

    首次提出並討論了矩陣反問題ax = b約束下實矩陣、實對稱矩陣、雙對稱矩陣和對稱次反對稱矩陣的擴充問題，討論了在其解集合中與給定矩陣a ~ *的最佳逼近問題，得到了問題的解存在的條件及通式的表示，給出求解問題的數值演算法和數值例子。
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