您要查找的是不是：
- calculus variation principle 变分法
- The maximum theory is proved on the basis of the calculus variation theory, then ,the optimal control problem turns into the mathematical problem of two point boundary value problem(TPBVP). 以变分原理为基础，推导出极大值原 理，从而使优化控制问题转变为数学理论中的两点边值问题。
- The exact form of the exterior problemfor plane potential problems is produced and fully proved by the variation principle. 利用变分法证明平面调和函数的外问题的确切形式;
- For us getting a good understand of this method, the basic math method of finite element is introduced such as variation principle, Ritz method and weighted residual method. 因此文章介绍了有限元数学基础即变分原理、里兹法和加权余量法，并结合本论文研究的重点液力变矩器介绍了有限元解题的步骤。
- The equilibrium differential equation and corresponding boundary condition of laterally loaded long-piles under double-parameter foundation were deduced by means of energy variation principle. 采用能量变分原理推导了双参数地基推力长桩平衡微分方程及相应的边界条件；
- From the variation principle,an analytical solution of the tangential stiffness matrices with nonlinear effects geometrically, for two-nodal two-dimension curved beam element, has been derived. 利用变分原理，推导了两节点二维曲梁单元几何非线性的单元切线刚度矩阵。
- mixed energy variation principle 混合能量变分原理
- Hamilton's law of variation principle 哈密顿变分原理
- Nonlinear electric field transient finite element equation is performed based on the backward Euler method and the Variational principle. 摘要基于后退欧拉法和变分原理推导了非线性电场的暂态有限元方程。
- By using the variational principle, we propose a novel narrowband interference (NBI) suppression scheme. 5．基于求解线性方程的变分原理，提出了一种新的窄带干扰（Narrowband Interference, NBI）抑制方案。
- Motion equations of the shell are derived by equation and the variational principle. 利用功率流的基本定义，研究了当壳体受迫振动时输入结构的功率流和壳体中各内力所携带功率流沿轴向方向传播时的变化规律，旨在为工程中类似结构的减振降噪提供指导性原则。
- Some references indicated that the extremum in the Schrodinger variational principle is a minimum. 已有的一些文献指出,薛定谔变分原理中的极值是极小值。
- From the elasticity variational principle, the governing dynamic differential equations of the geometric non-linear beam with large deflection is deduced. 摘要通过弹性力学变分原理建立了大挠度非线性梁的控制微分方程组。
- On the basis of dual variables variational principle for electromagnetic waveguides, dual edge element is presented in this thesis. 本文基于对偶变量变分原理,参照矢量基有限元的构造,提出了电磁波导的对偶棱边元。
- Prices have not shown much variation this year. 今年物价没显出多大变化。
- Then its generalized variational principle is established on the basis of Lagrange multiplier method by absorbing the first kind of boundary condition. 然后利用拉格朗日乘子法,吸收第一类边界条件,从而得出其广义变分原理;
- In this paper the elastic and elastoplastic interal forces of Cable dome strueture are analysed by the energy Variational principle. 本文采用能量变分原理分析拉索穹顶结构的弹性和弹塑性内力。
- Prices are subject to variation. 价格可以变动。
- This paper gives a smooth variational principle of lower semicontinuous functions which are bounded below on each bounded set. 本文给出了在每个有界子集上有下界的下半连续广义实值函数的一个光滑变分原理.
- Based on the variational principle of potential energy,displacement jump condition which depends only on material strength is derived. 应用势能变分原理导出了位移间断条件,它仅与材料的强度有关。
