After dispersing, the calculus of variations equation turn to FEM equation group and solve the equation group to gain the electromagnetic value.

离散后变分方程化为有限元方程组，求解可得口径场的电磁场值。

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This paper investigates several equiyalent propositions of minimal curve surface by means of the euler equation of calculus of variations .

本文通过变分法欧拉方程推导出极小曲面的几个等价命题。

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We calculate the equation of state (EOS) using two variations of simple mean field model and choose different parameter sets for calculation.

挑选不同的参数组，我们计算了两种模型的状态方程，他们都是简单平均场模型的改进。

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