By analyzing the early phase of frequency decay, it is possible to identify multi-shock earthquake sequence, but it is difficult to rapidly judge intermittent double-shock and swarm.

分析地震序列前期的时频度衰减曲线有可能区分出多震型地震，但快速区分间歇双震型和震群型地震较为困难。

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For non-strike-slip type earthquake, the situation is more complicated, and there are single-shock earthquake of high apparent stress, and also multiple-shock earthquake of low apparent stress.

非走滑型地震情况则复杂得多，既有视应力很高的孤立型地震，也有视应力很低的多震型地震。

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The shock waves of the earthquake were felt in Teheran.

在德黑兰感觉到了地震的震波。

《柯林斯英汉双解大词典》

The group says less time passes for an earthquake shock wave to reach a measuring instrument than in the past.

VOA: special.2009.03.17

Like an earthquake, the shock waves radiate from Terry and the aftershocks keep on coming.

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They mark, at best, the point where we can finally see that the earthquake is beginning, where the early tremors are starting to shake some buildings but the real shock is yet to be felt.

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