The wave velocity, permeability and porosity of rocks changed obvious around the threshold temperature.
在阈值温度附近岩石波速、渗透率和孔隙度变化幅度最大；
Low strain dynamic testing on actual pile was conducted to investigate if the wave velocity is varied in the installed pre-cast pile.
通过实际工程的低应变桩基动测，发现打入桩的波速随时间提高。
Unlike in a pure liquid in which the pressure wave velocity is constant, the wave velocity in gas-liquid mixtures varies with pressure.
在混合物中压力波速不象在纯液体中波速那样是恒定的，汽液混合物中的波速随压力变化。
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