摄动方法的英文

• perturbation methods

• "摄动"英文翻译    perturbation; disturbance
• "方法"英文翻译    method; means; way; techniqu ...
• "常微分方程摄动方法" 英文翻译 :    perturbation method in ordinary differential equation
• "摄动方程" 英文翻译 :    perturbation equation
• "非流动方法" 英文翻译 :    noncurrent method
• "起动方法" 英文翻译 :    starting method
• "启动方法" 英文翻译 :    starting method
• "驱动方法" 英文翻译 :    drive method
• "扰动方法" 英文翻译 :    disturbance methods; perturbation method
• "移动方法" 英文翻译 :    move method
• "边界驱动方法" 英文翻译 :    boundary drive method
• "连续手动方法" 英文翻译 :    method of progressive hand
• "模型驱动方法" 英文翻译 :    model-driven method
• "曲面驱动方法" 英文翻译 :    surface drive method
• "曲线驱动方法" 英文翻译 :    curve drive method
• "注射流动方法" 英文翻译 :    injection flow method
• "摄动" 英文翻译 :    [天文学] perturbation; disturbance
• "螺旋线驱动方法" 英文翻译 :    spiral drive method
• "奇摄动" 英文翻译 :    singular perturbation
• "扰动，摄动" 英文翻译 :    perturabance
• "摄动法" 英文翻译 :    method of perturbation; perturbation method; perturbation technique
• "摄动阶" 英文翻译 :    order of perturbation
• "摄动解" 英文翻译 :    perturbed solution
• "摄动力" 英文翻译 :    disturbing force; perturbing force
• "摄动体" 英文翻译 :    disturbed body; disturbing body; perturbing body

• Numericaj results are presented by a majss of tables and figures . in the second part , we propose direct perturbation methods of eigensensitivity ana1ysis a defective nlatrix for three different cases
  在第二部分中，我们给出了在三种情形下亏损矩阵的特征灵敏度的直接摄动方法。
• Compared to linear item , the nonlinear item is not small in these systems . so the traditional perturbation methods may not be applied in strongly nonlinear system directly
  对于强非线性系统，由于非线性项相对于线性项不再是小量，所以传统的摄动方法往往不能直接应用来研究强非线性系统。
• Employing perturbation method and numerical simulation , we study the flow in rotating helical pipes including different rotations , different cross sections ( circular , elliptical , annular and square cross section ) , and different geometrical structures
  采用摄动方法和数值计算方法，研究了处于多种旋转状态下、多种截面形状(圆截面、椭圆截面、环形截面、矩形截面) 、不同几何结构旋转螺旋管道流动。
• By using vector random field model and second - order perturbation method , viscoelastic stochastic finite element formulation is developed , which can take the correlation of random parameters into account and is suitable for stochastic structural analysis with larger variance of the uncertainties
  利用向量随机场模型和二阶随机摄动方法，给出了相应的粘弹性随机有限元列式。能够考虑参数的相关性，更加接近于prony级数的参数测试过程。
• A new type of viscoelastic stochastic finite element method is established using first - order perturbation theory based on local averaging method of random field and karhunen - loeve expansion theory of random process . the amount of computations is greatly reduced by transforming correlated random variables to a set of uncorrelated random variables . the relations of different random response variables are analyzed and monte carlo simulations for viscoelastic stochastic structures are investigated
  基于随机场的局部平均法以及随机过程的karhunen - loeve分解理论，通过一阶随机摄动方法建立了考虑材料近似不可压缩的粘弹性随机有限元公式，由相关结构分解减少计算量，分析了各结构随机响应量之间的关系，给出了数字特征的计算方法，研究了粘弹性随机结构的montecarlo模拟验证方法。
• And beginning with a perturbed nls equation , using a multi - scales perturbation expansion , we get the zero order and the first order equations , discuss the eigenstates of the operator in the equations , induct relevant " derivative states " , form the completeness of the bounded eigenstates of the associated operator in li space , and expand the corresponding parameters in the closure , get a series evolution equations of the coefficients in the expanded formulas , find the first order approximate solution by researching the evolution equations . this paper also gives the basis of this method - the completeness we have formed and the singular perturbation technique
  ) dinser方程的求解问题，讨论了自伴算子的本征函数的正交性和完备性，介绍了寻求微分方程的近似解常用的摄动方法，并从带有某种扰动项的nls方程出发，利用多重尺度的摄动方法得到了方程的零级近似方程和一级近似方程，通过对近似方程中算子的特征态的讨论，引入适当的“导出态” ，建立了算子在l _ 2空间的特征态的完备性。
• 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，研究了一维半封闭水域中的非定常风暴潮与天文潮非线性相互作用的问题，用摄动方法求出了具有实际意义的海湾顶部增水水位的一阶近似解析表达式，并给出了增水过程曲线。
• Based on optimal control theory and singularly perturbed theory , a singularly perturbed midcourse guidance law that guarantees air - to - ground missiles to ascent quickly is proposed . this new guidance law is a composite control law consisting of three parts : optimal climbing control using variable weighting factor method , minimum energy cruising phase control and minimum energy switching phase control . moreover , a new control logic is designed in order to remove influence of climbing control on switching phase . simulation results of a certain type of air - to - ground missile are presents . it is shown that , with simple control algorithm and feasible onboard implementation , this law not only guarantees air - to - ground missiles to ascent quickly , but also satisfies the requirements of midcourse phases . the studies have important theoretical meaning and great value of engineering application
  为满足实际作战的要求，基于最优控制理论和奇异摄动方法，提出了一种可保证中远程空地导弹快速爬升到最优高度的中制导律.它由变系数最优爬升控制，最小能量巡航控制和最小能量下滑控制组成.为了减小爬升段控制对下滑段的影响，提出了一种新的控制逻辑.最后针对某型空地导弹进行了仿真.结果表明，该中制导律较好地满足了中远程空地导弹在中制导段的要求.本文的研究结果具有较好地工程参考价值
• For initial rectangular and hexagonal disturbances on the interface , nonlinear fluid mechanics governing equations are solved respectively with the perturbation method , and 2nd - order approximate solutions are obtained . then effects of nonlinearity on r - t instability are discussed , and its significance is manifested
  应用摄动方法求解非线性的流体力学方程组，分别针对矩形和等六边形的界面初始扰动，得到了扰动发展的二阶近似解，并分析了非线性对r - t不稳定性发展的影响，指出非线性在其中的重要意义。
• Abstract : based on optimal control theory and singularly perturbed theory , a singularly perturbed midcourse guidance law that guarantees air - to - ground missiles to ascent quickly is proposed . this new guidance law is a composite control law consisting of three parts : optimal climbing control using variable weighting factor method , minimum energy cruising phase control and minimum energy switching phase control . moreover , a new control logic is designed in order to remove influence of climbing control on switching phase . simulation results of a certain type of air - to - ground missile are presents . it is shown that , with simple control algorithm and feasible onboard implementation , this law not only guarantees air - to - ground missiles to ascent quickly , but also satisfies the requirements of midcourse phases . the studies have important theoretical meaning and great value of engineering application
  文摘:为满足实际作战的要求，基于最优控制理论和奇异摄动方法，提出了一种可保证中远程空地导弹快速爬升到最优高度的中制导律.它由变系数最优爬升控制，最小能量巡航控制和最小能量下滑控制组成.为了减小爬升段控制对下滑段的影响，提出了一种新的控制逻辑.最后针对某型空地导弹进行了仿真.结果表明，该中制导律较好地满足了中远程空地导弹在中制导段的要求.本文的研究结果具有较好地工程参考价值