求翻译：(3)由于振动波是从顶面向下传播，考虑能量的衰减因素，顶面的下降量应大于底面的下降量，计算的结果与此相符。通过不规则颗粒单元相互运动，位置重排，在整体上就表现出颗粒路堤的振动压实致密效应，这充分说明采用动态离散元来模拟路堤颗粒的压实是可行的。是什么意思？

(3) due to the vibration wave for the next spread from the top, consider the energy attenuation factors, the top surface of the decline should be greater than the decline in the underside of the amount of the calculated results are consistent with this. Through the mutual movement of the irregular p

Because (3) the vibration wave is from the top downward dissemination, considered the energy the weaken factor, the top reducing should be bigger than the bottom surface the reducing, the computation result and this match case.Through the irregular pellet unit mutual movement, the position rearrange