Using the spatial scan method, the paper made magnitude frequency statistics according to the regions and calculated mean seismic number.
本文采用空间扫描方法，按选区和时段做震级—频度统计，计算年平均地震数。
Using the spatial scan method, the paper made magnitude frequency statistics according to the regions and calculated mean seismic number.
本文采用空间扫描方法，按选区和时段做震级—频度统计，计算年平均地震数。
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