对非线性弹性材料桩身完整性检测的低应变反射波新方法进行了研究。
A new reflection wave method is presented for inspecting the pile integrity of the non-linear elastic material under the condition of low strain.
海绵橡胶是密封条的重要组成部分，是一种可压缩的大变形非线性弹性材料。
Sponge rubber, which the seal is made up of, is a large deformation nonlinear elastic material.
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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