本文分析了唐山地震孕震过程的物理力学特征。
In this paper we have studied the physical and mechanical features of pregnant process cf Tangshan earthquake.
地震的孕震过程就是从无序到有序的演化过程。
A seismic preparation process is a process from disordered state to ordered.
地震的孕震过程就是从无序到有序的演化过程。
A seismic preparation process is a process from disordered state to ordered.
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