孔隙速度是示踪元素穿过孔隙介质的速度。
The pore velocity is the velocity with which a tracer moves through a porous medium.
当介质的速度在横向上存在较大的变化时，波动方程时间偏移不能使地下的构造正确成像。
Wave equation time migration fails to image subsurface geological structure correctly in the case of obvious lateral seismic velocity variation.
在此浮动基准面上求取的叠加速度仅取决于低速带底板下伏介质的速度，而与地形、低速带无关。
The stack velocity calculated on the floating datum depends on the velocity of medium underlying the low velocity layer and is independent of topography and low velocity layer.
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