利用时间城小地震地震图的方法，研究了震源参数与介质特性的差异。

In this paper, the difference of earthquake source parameters and medium property has been studied, by using small earthquake maps within a time domain.

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本文采用地质构造、地震活动图象、震源机制资料综合分析方法，对唐山地震序列主要的构造过程进行研究。

In this paper, the main tectonic process of the Tangshan earthquake sequence was studied by comprehensive analysis of geological structures, seismicity pattern and focal mechanism data.

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通过对传感器布置优化分析，绘出传感器布置的一个优化分析结果的震源定位等值线实例图。

Optimal analysis of layout of sensors gives the optimized results of sensors positions presented through an isogram of the source location.

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