Sandstone samples are selected by the compressive wave velocity and the shear wave velocity.
首先采用声波纵、横波测量方法，进行岩样筛选。
The relationship between uniaxial compressive strength and the velocity of longitudinal wave of concrete material with different grading is found through laboratory testing.
通过试验得出不同级配混凝土试样的纵波波速与其单轴抗压强度的关系。
Therefore, the compressive strength difference of lime-soils can only be evaluated based on the shear wave velocity.
因此，只有依据剪切波速才能评价各种条件下石灰改良土强度特性的差异。
The results show that, open-cellular al foams have a good shock weakening property, where the shock compressive stress weakens exponentially and the wave velocity weakens linearly with the distance.
结果表明：开孔泡沫铝具有良好的冲击衰减性能，使冲击波压力在其中呈指数关系衰减，而波速则随距离呈线性关系衰减。
The results show that, open-cellular al foams have a good shock weakening property, where the shock compressive stress weakens exponentially and the wave velocity weakens linearly with the distance.
结果表明：开孔泡沫铝具有良好的冲击衰减性能，使冲击波压力在其中呈指数关系衰减，而波速则随距离呈线性关系衰减。
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