Compressive faults occurred after principal earthquake with slow variation in propagation and release of stress wave, this might lead to higher after shock intensity and longer duration.
挤压型逆冲断层地震在主震之后，应力传播和释放过程比较缓慢，可能导致余震强度较大，持续时间较长。
In this paper, using principal component method 115 strong-motion earthquake records are analysed.
本文运用主成份法对115个强地震运动资料进行了分析。
This paper describes the transducer of the resistance strain gauge, the formulas for its principal stress and the application of the earthquake prediction.
本文介绍了电阻应变片传感器及其主应力公式和在地震予报中的应用。
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