N/A
(地震的)前震
Signal earthquake is a kind of generalized foreshock.
信号震是一种广义的前震;
词组
noun
1.A mild tremor preceding the violent shaking movement of an earthquake.
‘a foreshock had been reported before the 1966 earthquake’
‘With the second model, accelerating fault slip on the mainshock nucleation zone triggers foreshocks.’
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