The feature that structures have the selectivity to the earthquake motions frequency and structure response has the close corresponding relation with instantaneous energy spectrum is pointed out.

指出了结构对地震动的频率具有选择性，结构的响应与瞬时能量谱之间具有密切的对应关系。

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OBJECTIVE: To analyze the relation between drugs demand and injury sorts or injury severity in earthquake casualty.

目的：分析地震伤伤类和伤情与药品需求的关系。

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The method of earthquake prediction by means of amplitude relation anomalies is suggested, it is analogous to that by means of velocity anomalies.

采用与研究波速异常完全类似的方法，提出了利用振幅比异常预报较大地震的一些初步途径。

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