In the variational equation, there is only line integral.
在变分方程中，只存在线积分，没有面积分。
Finally, based on the total variational equation, the finite element method of these problems is also discussed.
最后讨论了利用全变分方程建立有限元的方法。
In this paper, large amplitude variational equation of conical shallow thin shells is derived according to the principle of minimal action quantity.
本文首先用最小作用量原理推导出扁薄锥壳大振幅的变分方程。
From studying some kind of quite complex variational equation problems and applying the conclusion, we prove that the optimal control of new model is existent and characterize its structure.
通过对一类相当复杂的变分方程问题的研究并利用其有关结论，我们证明了新模型最佳控制的存在性并刻划出其结构。
From studying some kind of quite complex variational equation problems and applying the conclusion, we prove that the optimal control of new model is existent and characterize its structure.
通过对一类相当复杂的变分方程问题的研究并利用其有关结论，我们证明了新模型最佳控制的存在性并刻划出其结构。
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