n. hodograph
misc. velocity plan
通过编制全球数千次地震的地震速度图，他们还可以开始绘制地幔的温度和密度图。
By compiling a map of seismic velocities from thousands of earthquakes across the globe, they can also begin to map temperatures and densities throughout the mantle.
了解位置、速率和加速度图。
这说明对于实际地震加速度图，其功率谱是与均值速度反应谱相对应的。
This means that for actual earthquake accelerograms their power spectrum corresponds to mean response spectrum.
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