One factor that influences earthquake intensity is the distance to the epicenter of those who feel the earthquake's effects.
影响地震强度的一个因素是人们感觉到地震影响的震中距离。
type of waves can be used to estimate distance to the epicenter.
通常，波长较短传播较慢—但是破坏性要大的多—的S波会随之而来。 通过这两种波到达时间的差值可以估算震中的距离。
From the epicenter of the distance to the source told focal depth.
从震中到震源的距离叫震源深度。
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