It is proved that the method is correct by comparing with the theoretical results of a simply-supported beam with random mass density and section diameter.

用一个具有随机质量密度和截面直径的简支梁的理论结果，验证文中方法的正确性。

As an example an inhomogeneous medium is studied where the shear modulus and mass density are parabolic and the dispersion curve of the lowest order vibration type is given.

文中以剪切弹性模量和质量密度随深度呈抛物线变化的非均匀介质为例，给出其最低阶振型的频散曲线。

The gravity field out of the earth depends on the interior mass density distribution of the earth.

地球外部重力场是由地球内部物质分布决定的。

As we have remarked before, we face a similar problem in defining the ordinary mass-density of a substance.

正如我们在前面已经注意到的，我们面对着和定义通常的物质密度相似的问题。

The neutron shield is fabricated from a high mass/density material which provides a good source of neutron absorption.

这种中子屏蔽是由高质量／密度材料做成的，它能够很好地吸引中子。

CONCLUSION Genistein could improve the bone mass density, biomechanics and correlated biochemical indicators ovariectomized rats and could be used for osteoporosis treatment.

结论染料木素对模型动物的骨密度、骨生物力学及相关生化指标都具有改善作用，具有较好的抗骨质疏松作用。

The effect of the rise of ground water level was simulated by increasing the mass density of pore water in the soil elements between the initial and targeted ground water levels.

通过逐步改变初始和终止地下水位间土单元中孔隙水的密度模拟地下水位上升的效应。