Secondly, after the renovation of digital seismograph network, the enhanced ability of regional monitor is also one of reasons of the high small earthquake frequence.
其次，测震台网数字化改造后，区域监测能力的提高也是本区小震频度增高的原因之一。
Secondly, after the renovation of digital seismograph network, the enhanced ability of regional monitor is also one of reasons of the high small earthquake frequence.
其次，测震台网数字化改造后，区域监测能力的提高也是本区小震频度增高的原因之一。
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