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.

youdao

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.

youdao