recurrence equations造句

• Starting from the collins formula, a recurrence equation of hermite-cosine-gaussian ( hcg ) beams propagating through a paraxial abcd system with a hard-edged aperture is derived, from which the analytical propagation expressions for apertured hcg beams of any order can be derived by using the recursive algorithm
  從collins公式出發，推導出了厄米?余弦?高斯光束通過有硬邊光闌近軸abcd光學系統傳輸的遞推公式。由遞推公式，借助迭代算法，得出受光闌限制的任意階厄米?余弦?高斯光束的解析傳輸公式。
• Based on the theory of stochastic finite element, the structural parameters of frame-shear structure including stiffness and mass and damping are simulated to be stochastic variables . by solving recurrence equation of stochastic finite element, the duration curve of mean value and standard deviation of seismic response can be obtained for every floor of frame-shear structure . an analysis is thus given to the effects of independent variation and simultaneous variation of structural parameters on the seismic dynamic response of frame-shear structure . as shown by the results, with regard to frame-shear structure, the effect of variation of strucural parameters on the change of mean value are chiefly the increase of standard deviation of response . variation of stiffness will cause the response of frame-shear structure to variate greatly; variation of mass shows less effect; and variation of damping shows insignificant effect . the effects of simultaneous variation of various structral parametres on seismic response are only slightly greater than the effect of stiffness variation alone
  以隨機有限元理論為基礎，將框剪結構的剛度、質量、阻尼等結構參數為隨機變量.通過求解隨機有限元的遞推方程，得到框剪結構各層的地震動力響應均值和標準差歷時曲線.分析結構參數單獨變異，以及同時變異對框剪結構地震響應的影響.研究結果表明,對框剪結構而言，結構參數的變異對響應的均值變化影響都不大，主要是增大響應的標準差.剛度的變異性將引起框剪結構的響應發生大幅度變異，質量的變異性影響稍小，阻尼的變異性影響不顯著.結構各參數的同時變異，對框剪結構地震響應的影響，僅比剛度單獨變異的影響稍大
• It's difficult to find recurrence equations in a sentence. 用recurrence equations造句挺難的