前兆震群_有道手机词典

1.初步认为荣成震群是一次频发性震群，不是前兆震群。
It is suggested that the swarm might occur frequently and was not a precursory one.
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2.其他许多中国的大地震象海城地震一样，也有类似的前兆震群。
Many other violent earthquakes sofar occurred in China, similar to the Haicheng earthquake, also had precursory earthquake swarms.
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3.应用主成分分析方法构建了前兆震群判别方程，对震群活动的异常特征进行了分析。
The anomalous characteristic of the swarm activity is analyzed using the precursor swarm distinguishing equation constructed by the principal component analysis method.
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