地震过程是应变能积累与释放的结果。
It is well-known that the earthquake is result from the accumulation and release of strain energy.
在地震过程中，山体的稳定性在基地晃动中更加脆弱了。
During an earthquake, hillside stability is further threatened as the ground is shaken.
本文用非线性力学方法讨论了地震过程的非稳定现象并建立了相应的突变理论模型。
This paper discusses the instabilities in an earthquake process by means of nonlinear mechanics and establishes a relevant catastrophic model.
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