紧接着就是悄然降低地震的震级，但为了确保公众不会注意到，美国地质勘探局控制了所有报告地震统计的网站。

Dumbing down the magnitude quickly followed, but in order to ensure the public did not notice, the USGS took control of all websites reporting quake statistics.

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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.

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利用德令哈地震台dd - 1记录到的746个近震，对其测定的震级偏差进行统计计算，发现DD - 1测定的震级偏小。

The magnitude deviation is statistically calculated by 746 local earthquakes recorded by DD-1 at Delingha station, and it is found that the magnitudes by DD-1 are smaller.

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