This definition of distance is able to better reflect the fault-rupture model of the occurrence of tectonic earthquakes.

这个定义能较好地反映发生构造地震的断层破裂模式。

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To reduce the above deviation, the concept of rupture length is introduced into the fault-rupture model, but the attenuation is quite different from practical dam.

为了克服上述偏差，断层-破裂模型引进了破裂长度的概念，但其衰减与实际资料出入较大。

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For most of the regions, isoseismals are of somewhat elongated shape. The empirical point-ellipse model can reduce systematic deviation of point-source and fault-rupture models.

对多数地区，等震线略具狭长的形状，经验点椭圆模型可以减小点源模型和断层破裂模型的系统偏差。

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