seismometer galvanometer

例句：

1. 1. The seismometer was usedto measure the earthquake's magnitude.
   地震计被用来测量地震的震级。
2. 2.The seismometer is a device thatmeasures the movement of the Earth'scrust.
   地震计是一种测量地球地壳运动的装置。
3. 3. The seismometer is essentialfor monitoring earthquakes and studying their effectson the environment.
   地震计对于监测地震和研究其对环境的影响至关重要。