通过精密观测(误差在1%以下),能获得地震的前兆信息。
Through precise observations (the error of which should be smaller than 1%), it is possible for us to obtain precursory information of the earthquakes.
在这种情况下,各次地震的前兆场之间的相互叠加是不可避免的。
In this case, it is necessary that the precursor fields are formed by every earthquake to superpose mutually.
这次大地震的前兆与以往地震的和被预测到地震的前兆有很大的不同。
There were remarkable differences between precursor events of this particular earthquake and those of other predicted earthquakes.
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