N a relatively small earthquake heralding the arrival of a much larger one. Some large earthquakes are preceded by a series of foreshocks 前震 → compare aftershock
We use 78 focal mechanisms of the fore shocks, main-shock and after shocks of the Yao 'an earthquake sequence to analyze the characteristics of focal fault and stress field.
用姚安地震序列前震、主震和余震的78个震源机制解，分析了序列震源断层和震源应力场特征。
In this paper, the nonequilibrium viscous shock layer equations have been used to calculate the hypersonic flows over blunt bodies in the fore-body region (including stagnation line and sonic line).
本文从化学非平衡粘性激波层控制方程出发，用数值法计算了高超音速钝体绕流头部区流场(包括驻点线和音速线)。
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