发现在层裂特性研究中，应力波衰减有重要意义。
It is found that the attenuation of stress wave is important for study of spallation property.
分析了动力试桩中，因土阻力和桩身材料阻尼引起的应力波衰减作用对桩身的完整性检测精度的影响。
It also analyses the influence of attenuation of stress wave cased by the soil resistance and the damp of pile shaft material in dynamic pile test on the precision of pile shaft integrity test.
本文采用自动数据采集及FFT技术研究应力波的弥散与衰减特性。
Dispersion and attenuation characteristics of stress waves were studied by means of the automatic data collection and FFT technique.
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