查询词典 simultaneous differential equations

Adding boundary conditions in whole equations in the wavelet Galerkin method frequently does with its of differential equations. The result can derive by solving transcendental equation, which make unknow quantity number and the number of system of equation become nonuniformity.

经常采用的小波Galerkin方法对微分方程边界条件的处理，均是将边界条件作为附加方程补充到整体方程中，从而求解超越方程组得到原方程的解，这导致了求解过程出现的方程组个数与未知量个数不一致。

The formulation of power system transient stability preventive control based on optimal power flow is presents in this thesis, in which multicontingency is considered. The infinite dimensions nonlinear optimization problem in which differential-algebraic equations are existed is changing into finite dimensions difference-algebraic equations by implicit trapezoid method.

建立了基于最优潮流的电力系统暂态稳定预防控制模型，通过隐式梯形法将含有发电机动态微分-代数方程和暂态稳定约束的无限维优化问题转换成有限维的常规静态最优潮流问题。

The Schroedinger Equation with unitary evolution equations is a matrix differential equations, so Wei-Norman decomposition can be used for solving the multi-level quantum systems.

Wei-Norman分解对于分析矩阵微分方程的解是比较成熟的理论，含有幺正演化矩阵的薛定谔方程是矩阵微分方程，所以可以利用Wei-Norman分解来分析求出多能级量子系统的解。

Then, we offer two applications to nonlinear Volterra type integral equations and the initial value problems for ordinary differential equations in Banach spaces.

在第二节中，通过建立新的比拄定理，在反向上下解条件下，椰了BaDach 空间中下列一阶非混合型徽分－积分方程周用边位问题仔BVP） I y＝＝歹u.X。

The dynamic equations of helically buckled pipe string in vertical wells are a group of high order nonlinear ordinary differential equations, which describe the axial force distribution and deformation behavior of pipe.

描述垂直井中螺旋弯曲管柱轴力分布和变形行为的力学方程是一组高阶非线性常微分方程组。

Multivalued functional differential equations and integrodifferential equations are an important branch in the theory of nonlinear analysis, which have wide applications in many fields such as engineering, economics, optimal control and optimization theory.

多值泛函微分方程和积分微分方程是非线性分析理论的一个重要分支，它在工程、经济、最优控制及最优化理论等领域有着广泛的应用。

In this dissertation, considering the influence of transverse shearing deflection and noncoincidence of torsion center and gravity center, the equilibrium formulas of variable-curvature box-girder with rectangular cross section were established. Based on deformation expression of arbitrary point on the girder and relationship between inner forces and displacement equations, considering noncoincidence of torsional center and gravity center, the governing differential equations for variable-curvature box-girders were generalized.

针对具有竖直对称轴的矩形断面变曲率箱梁，考虑了挠曲剪切应变和曲梁剪心和形心分离的影响，推导了变曲率箱梁的平衡方程；通过箱梁内任一点的位移方程和内力-位移关系，推导了考虑曲梁剪心和形心分离的变曲率箱梁的挠曲扭转控制微分方程。

The kinematic model of vibration system is established and the kinematics differential equations are obtained. On the basis of analyzing unbalancing response, the plane separation equations are achieved.

建立了该振动系统两自由度摆动的动力学模型，得到其运动微分方程，进行了不平衡响应分析，获得求解校正质量的平面分离方程。

In this paper the rocket of 122mm, 20km is exampled, CADET is used in random ballistics system with the action of random wind by use of sharping filter when the differential equations of sharping filter and angle motion equations of ballistics are allied.

以某火箭弹为例，在随机风场作用下，利用纵风作用下的随机弹道系统成形滤波器，把成形滤波器的微分方程和外弹道角运动方程联立，对此系统采用协方差分析描述函数法，对火箭弹的散布进行了计算。

The model consists of 25partial differential equations with 25 unknowns and is reduced to 5 governing equations with 5 unknowns using increament-linearized method, i. e, the three displacement components of soil, the pore water pressure and the pore air pressure.

在增量线性化的情况下，此模型简化为五个控制方程求解五个未知量：三个固相位移、孔隙水压力和孔隙气压力。

The receding calculations and experiment analyses in this subject are built on the blood cast of pig tongue.

本研究课题的前期工作是采用猪舌血管铸型模拟人舌而进行的数值计算与实验分析。

"Each human infection constitutes an opportunity for genetic modification of the virus through reassortment, mutation, or both...."

&每一次人类的感染都暗藏着一次基因修改的机会，无论是通过病毒的整合、突变或者兼而有之。。。。&