1889年4月17日在波茨坦对远震的成功记录标志着通过地震波方式研究地球结构的开始。
The first recording in Potsdam of such teleseisms on April 17, 1889 marks the birth of the study of the structure of the Earth by means of seismic waves ( see blog January 14, 2009).
1889年4月17日在波茨坦对远震的成功记录标志着通过地震波方式研究地球结构的开始。
The first recording in Potsdam of such teleseisms on April 17, 1889 marks the birth of the study of the structure of the Earth by means of seismic waves ( see blog January 14, 2009).
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