Some end value condition derived by variational method in accordance with the least energy loss principle and their mechanical background are also dealt with.
同时从能量最小原理出发，用变分的方法推导出几种端值条件，说明它们的力学背景。
The expression of ground energy is given by means of variational method, and the condition of formation of photon pairs discussed.
然后利用变分法求得了超导波态系统的基态能量表达式，并讨论了光子对的形成条件。
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；
By means of the variational approach, in a condition weaker than(AR) the existence of infinitely many solutions of fourth-order elliptic equation is discussed.
在比（AR）条件更弱的一类超线性条件之下，利用变分方法讨论了一类超线性四阶椭圆方程的无穷多解的存在性。
The acute Angle theorem is extended under the condition of the variational structure.
在具有变分结构条件下推广了锐角原理。
Based on the free boundary theory and the variational method, a fast and accurate model for the calculation of the fluid-film forces under the Renolds boundary condition is presented.
基于变分法提出了一个求解雷诺边界条件下有限长轴承油膜力的快速算法，用此算法对一个三油叶不平衡轴承—转子系统的非线性动力学行为进行了一系列的分析。
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。
Conversion relations between two variational functionals that take respectively same equation as their constrain condition and Euler's equation are obtained.
指出了以同一方程作为约束条件及欧拉方程的两个泛函之间的转换关系。
Conversion relations between two variational functionals that take respectively same equation as their constrain condition and Euler's equation are obtained.
指出了以同一方程作为约束条件及欧拉方程的两个泛函之间的转换关系。
应用推荐