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Sigma KEE - EarthTremor

地震

An EarthTremor is an individual seismic event in which the earth shakes due to release of seismic pressures.

Relationships
Parents	地质过程	The class of activities that are caused by geological forces and affect geological features, and which may affect the biosphere as well.
	震	Motion that involves rapidly Rotating between two positions.
Children	余震	Aftershock is the subclass of EarthTremors that occur after the main tremor(s) of an Earthquake.