main shock [地震] 主震
main shock strut 主起落架 ; 主起落架减震支柱
main shock-after shock type 主震余震型
Main shock or Principal shock 主震或本震
main shock-aftershock type 主震余震型
Chi-Chi main shock 集集主震
main shock type 主震型
main shock type swarm 主震型震群
The stress at station YUS increased after the main-shock, and with the stress release caused by the aftershocks, the stress reduced in the late stage.
YUS台附近的地壳应力在主震后得到了增强，随着余震活动导致的应力释放，后期应力减小。
We use 78 focal mechanisms of the fore shocks, main-shock and after shocks of the Yao 'an earthquake sequence to analyze the characteristics of focal fault and stress field.
用姚安地震序列前震、主震和余震的78个震源机制解，分析了序列震源断层和震源应力场特征。
Their house, which was solidly built, resisted the main shock.
他们的房子修建得很坚固，经受住了主震。
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