在重新整理烈度、距离等参数的同时，认为取两等震线的中心线比取烈度的外包线更合理。
When reanalyzing the parameters for intensity and distance, it iS considered that taking the central line of the two isoseismic is more reasonable than taking the outer envelop of the intensity.
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。
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.
本文利用山东省及其邻区14个地震的37条等震线拟合山东地区地震烈度衰减公式。
The formula of seismic intensity attenuation fitted by using 37 isoseismal lines of 14 earthquakes in Shandong and near area.
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