At the same time, the peak values of monthly frequency of small earthquake swarms in Linxian County, Taiyuan and the Changdao area almost synchronously occurred.
同时发生在林县、太原、长岛地区的小震群，其月频度几乎同步出现峰值。
At the same time, the peak values of monthly frequency of small earthquake swarms in Linxian County, Taiyuan and the Changdao area almost synchronously occurred.
同时发生在林县、太原、长岛地区的小震群，其月频度几乎同步出现峰值。
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