microtremor spectra

例句：

1. 1.The seismometer was used to measure the microtremor spectra of the earthquake.
   地震仪被用来测量地震的微震谱。
2. 2.The researcher analyzed the microtremor spectra to understand the source mechanism of the earthquake.
   研究者分析了微震谱，以理解地震的源机制。
3. 3. The microtremor spectra were used to detect the location and magnitude of the earthquake.
   微震谱被用来检测地震的位置和震级。