The result shows that the delay effect of noise propagation and the effect of the compressibility of liquid on the noise can be obtained.
结果显示混合边界元方法在这类动边界声辐射问题上，能体现出声音传播的延迟效应，体现出液体压缩性对声压峰值的影响。
An exponential model is proposed to fit the stress-strain-time curve and obtaining good fitting effect. Parameters of this model are easy to get and can reflect the compressibility and its mechanism.
采用指数模型拟合城市固体垃圾的应力-应变等时曲线，并取得了很好的拟合效果，模型参数简单易求，可反映城市固体垃圾压缩性的大小及其压缩机制。
An experimental study in laboratory was carried out to determine the effect of ground stress on core porosity, permeability and compressibility by using confined pressure to simulate terra stress.
通过室内试验，利用围压模拟地层应力，研究了有效应力与岩心的渗透率、孔隙度、岩石压缩系数之间的关系。
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