硅酸和硫酸根在同一地震前异常时间与异常形态相似。
It is similar that the abnormal time and the abnormal shape of the silicic acid and the sulphate before the earthquake.
震例分析表明,用上述方法提取的震磁中期异常时间一般不超过9 个月。
The duration time of the seismomagnetic anomaly distinguished in above methods is no more than 9 months, which is the medium - short term anomaly.
结果表明,每当大震发生前,C_1值均出现异常峰值,异常时间一般不超过一年。
The result shows that the anomalous peak values of C1 often appear before great earthquakes.
and it was a very very tough period.
那段时间真是异常艰辛。
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