短語詞組短語nature of earthquake swarm 震群性質(zhì)character of earthquake swarm 震群性質(zhì)cause of earthquake swarm 震群成因Earthquake swarm of Daixian 代縣震群characteristics of earthquake swarm sequence 震群序列特征feature of earthquake swarm sequence 震群序列特征The characteristic of earthquake swarm 震群特征 返回 swarm of earthquake