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；

Then its generalized variational principle is established on the basis of Lagrange multiplier method by absorbing the first kind of boundary condition.

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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；

Then its generalized variational principle is established on the basis of Lagrange multiplier method by absorbing the first kind of boundary condition.

youdao