常用短語(yǔ)

cause of earthquake swarm震群成因

nature of earthquake swarm震群性質(zhì)

Earthquake swarm of Daixian代縣震群

character of earthquake swarm震群性質(zhì)

feature of earthquake swarm sequence震群序列特征

The characteristic of earthquake swarm震群特征

characteristics of earthquake swarm sequence震群序列特征