说明地磁异常变化是一种有希望的地震前兆现象。
It indicated that the geomagnetic anomaly is a promising phenomenon in the studies of earthquake precursors.
研究地震活动图象而引入的地壳屈曲，从地壳为一层状结构物的基本事实出发，对很多地震前兆现象可做出自己的解释。
Being introduced to investigate seismic pattern, crustal buckling can explain many earthquake precursor phenomena according to the layered structure of crust.
地震水化前兆是发生在地壳内诸多地球化学过程并通过化学指标反映的现象之一。
The earthquake precursor of hydrogeochemistry is one of the phenomena that the chemical processes occur in the crust and can be indicated by the chemical indexes.
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