自由表面上同时满足动力和运动的非线性条件。
Both the dynamic and kinematic free surface conditions are considered in nonlinear version.
并给出了非线性半定规划的最优性必要和充分条件。
Finally, optimality necessary and sufficient conditions for nonlinear convex semidefinite programming are proved.
即使在微小变形条件下，砼材料也具有非线性性质，不是理想的弹性材料。
And even in condition of tiny deformation, the concrete material is not perfect elastic but nonlinear.
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