根据边界条件和对称条件，建立合理约束的翻译：According to the boundary conditions and the symmetry conditions, establish a reasonable constraint 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Boundary conditions and symmetry conditions, a reasonable constraint

According to the boundary conditions and the symmetry conditions, establish a reasonable constraint

According to the boundary condition and the symmetrical condition, establish the reasonable restraint

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According to the boundary conditions and the symmetry conditions, establish a reasonable constraint