n. seismogram
测震仪的运动是怎么转换成震动图的？
How is the movement of the seismometer converted into a seismogram?
震动图的产出是自动的； 通过在南加州的重大地震来触发。
Production of the maps is automatic, triggered by any significant earthquake in southern California.
震动图(测量结果的图示)或模型计算的出现，使得将地下结构可视化成为了可能。
Seismograms (graphic representations of the measuring results) or model calculations derived from them allow the formulation of statements about the underground structures.
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