近似解法 的英文怎麼說

中文拼音 [jìnsìjiěfǎ]
近似解法 英文
approximate solution
  • 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...
  • 解 : 解動詞（解送） send under guard
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  • 近似 : approximate; similar; approach; approximation; roughness; propinquity
  • 解法 : method of solving; solving process; [數學] solution
  1. Abstract : considering the second nearest - neighbor interaction and cubic, quartic anharmonic interactions simultaneously, we employ the multiple scales method combined with a quasidiscreteness approximation to calculate the lattice vibration. it is shown that the kind of nonlinear chain exhibits envelope soliton, envelope kink and envelope antikink soliton. these results can also be used to explain the experimental phenomena that the kink amplitude of the self - localized structure is determined only by the intrinsic properties of its lattices

    文摘:同時考慮次近鄰諧振相互作用和三次方、四次方非諧相互作用，利用多重尺度結合準離散近似方法去計算晶格振動行為，發現一維非線性點陣中存在包絡孤子及正扭結型包絡孤子、反扭結型包絡孤子，解釋了自局域結構的幅度只取決于點陣中的固有參數的實驗現象
  2. There are two approaches generally used to arrive at these approximations.

    通常有兩種方法用於獲得近似解析式。
  3. 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。
  4. The optimum designs of a good and applied outer pressure tank structure of submarine ? quasi - homocentric structure, based on approximate analytical methods and finite element stress analysis method are made

    提出了準同心圓式潛艇外部耐壓液艙結構是一種優良實用的結構型式，給出了這種結構基於近似解析法和基於有限元應力分析的結構優化設計方法。
  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. Numerical procedures of upper - bound approximation of shakedown loads and its application in engineering

    安定荷載上限近似解的數值分析方法及其應用
  7. The fundamental ideas and methods of this paper are also illuminated in this chapter. in chapter two, a one - dimensional and semi - closed shallow sea mode is studied. the approximate analytical expressions of the water level at the top of the bay induced by the nonlinear interaction between the storm surges and the astronomical tides are obtained by using the perturbation method

    在第二章里，研究了一維半封閉水域中的非定常風暴潮與天文潮非線性相互作用的問題，用攝動方法求出了具有實際意義的海灣頂部增水水位的一階近似解析表達式，並給出了增水過程曲線。
  8. Then the judging method is proposed, and the proposed method can consider the stress history and viscosity shear strength of soft soil. in this paper, a fem program dpfbm1. 0 ( double plastic foundation beam method ( version 1. 0 ) ) is established. with this program, the influence of some parameters on foundation excavation is fully studied, the parameters include : compression modulus, cohesive strength, angle of internal ficiction, effective angle of internal friction, the embedded length of the wall and building load

    針對當前國內外彈性地基梁法存在的缺陷，基於對軟土流變性的研究，採取了剪應力判斷彈塑性狀態，以改進和完善基坑工程彈性地基梁法，推導了彈性狀態下地基反力系數的近似解，提出了採用剪應力組合判斷土彈簧彈塑性狀態的方法，編制了相應的彈塑性共同變形法分析程序dpfbm1 . 0 （ doubleplasticfoundationbeammethod （ version1 . 0 ） ） ，並採用該程序分析了壓縮模量、粘聚力、內摩擦角等參數變化對基坑工程的影響。
  9. 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。
  10. A new waveguide made of changing a wide wall of a rectangular waveguide to a uniform curved wall is called conformal waveguide. a kind of expression of approximate solution for domain mode of the new waveguide, including symmetric, unsymmetric arc, parabolic arch, hyperbolic arch, elliptic arch, etc., is constructed by using boundary condition of mental waveguide, variational method and boundary element method. by using the equivalence principle, an approximate calculating formula for equivalent resonant conductance of a narrow longitudinal halfwavelength slot cut in the curved wall of the unsymmetric arcrectangular waveguide is derived, and the result is shown. although this solution is approximate, it can solve the problem in designing the slotted antenna of such conformal waveguide

    把矩形波導一個寬面外突成均勻曲面構成的新波導統稱為共形波導.利用金屬波導邊界條件、變分法、邊界元素法構造這種新波導中主模場的一種近似解表達式，包括曲面橫截線為對稱、非對稱圓弧，拋物線弧，雙曲線弧，橢圓弧等.然後根據等效原理，推導非對稱圓弧矩形波導曲面上窄的縱向半波長縫隙的等效諧振電導的近似計算公式，給出計算曲線.這種解雖然是近似的，但卻能解決這類共形波導縫隙天線的工程設計
  11. For the stress analysis of dryers under the line load of supporting rollers, according to hoff theoretical solution of thin cylindrical shell under line loads, mangelsdorf approximate solution is modified on the basis of the calculation analysis for 14 sets dryers " dimension by computer programming with matlab software. the approximate formulas of the second largest hoop stress of the middle section of the shell are derived

    針對托輥線壓載荷作用下烘缸的受力分析，本文根據薄壁圓柱殼在線壓載荷作用下的hoff理論解，在運用matlab軟體對14組常用烘缸參數進行編程計算分析的基礎上，對mangelsdorf近似解作了修正，並由最小二乘法導出殼體中部截面環向應力次大值的近似計算式。
  12. Under mild assumptions on the inexactness, we can find an e - approximate solution of the socp by using this algorithm

    在相對不精確的假設下，利用該演算法可找到二次錐規劃的-近似解。
  13. In section 2. 2, by a priori estimates and fourier spectral method, we prove the existence and uniqueness of the global smooth solution for the periodic initial value problem and obtain the large time error estimate between spectral approximate solution and the exact solution. in sections 2. 3 and 2. 4, by a priori estimates and galerkin method, we prove the existence of the global smooth solution and global attrac - tors for the initial - boundary value problem. chapter 3, consider the initial - boundary value problem of the multidimen - sional non - homogeneous gbbm equations

    第二章，考慮一類一維非齊次bbm方程，在第二節中利用fourier譜方法和先驗估計證明了具有周期初值問題的整體光滑解的存在性和唯一性，給出了fourier譜近似解和精確解的長時間誤差估計；在第三、四節中討論了初邊值問題，利用與時間t無關的一致先驗估計，證明了整體光滑解和整體吸引子的存在性。
  14. 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。
  15. Approximate solving method of lateral displacement of diaphragm wall

    地下連續墻水平位移的一種近似解法
  16. Approximate solving methods for two nonlinean wave equations

    兩類非線性波方程的近似解法
  17. High frequency approximate solution of wave equation of bit vibration source in seismic while drilling

    隨鉆地震鉆頭震源波動方程的高頻近似解法
  18. Abstract : an approximate solution of a class of singular integral equation is given, the error and the possibility of the solution is analysed and proved

    文摘:給出了一類奇異積分方程的一種近似解法，並對其誤差進行了分析估計，同時驗證了該方法的可行性
  19. We have simplified the model through obtaining the average system of the underactuated robot using averaging method which is efficient to deal with nonlinear system. the simulation results show that the real system and the average system have the same trajectory in the phase plane under the disturbance of periodic input of the actuated joint of the robot

    將驅動臂的運動作為非驅動臂的擾動，建立了非驅動臂的動態模型，利用動態方程有效的近似解法?平均法，對非驅動臂的動態模型進行簡化，得到近似的平均系統，通過模擬計算驗證了二者具有相同的動力學特性。
  20. Therefore, basic methodologies for stochastic seismic and filtering responses of nonlinear structure are studied, the approximate solution methodologies and their practical applications are investigated in the dissertation employing equivalent linearization and moment equations method based on fpk equations and ito stochastic differential equations

    因此，本文基於fpk方程和伊藤隨機微分方程，研究了滯后結構物的隨機地震反應和隨機濾波問題的基本方法，並利用等效線性化法和矩方程法，研究了非線性結構隨機地震反應分析和隨機濾波分析的近似解法及它們的工程應用。
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