如何精确地测定地震观测系统的频谱特性，是测震学中的一项重要课题。
The problem of accurately measure the spectral characteristics of a seismic observational system is an important subject of investigation in seismology.
照片：1969年7月20日BuzzAldrin刚刚在月球表面设置完成测震学仪器。
Photo: Buzz Aldrin has just set up seismographic equipment on the surface of the moon, July 20, 1969.
利用此比值常数以及由测震学指标所确定的T_1和求得的T_2可以进行确定性的中长期地震预报。
By means of this ratio and T_1, T_2, determined by seismometry, the mid long-term forecasting of earthquakes can be done.
利用此比值常数以及由测震学指标所确定的T_1和求得的T_2可以进行确定性的中长期地震预报。
By means of this ratio and T_1, T_2, determined by seismometry, the mid long-term forecasting of earthquakes can be done.
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