Doing those probability density dot graphs, we can get an idea of the shape of those orbitals, and we know that they're spherically symmetrical.
2
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.
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