electronic vertical long-period seismometer

例句：

1. 1.The electronic vertical long-period seismometer is used to detect earthquakes.
   电子垂直长周期地震仪用于检测地震。
2. 2. The seismometer was designed to measure the movement of the Earth's crust.
   地震仪被设计用来测量地球地壳的运动。
3. 3.The seismometer is a crucial tool for geologists in their research on earthquakes.
   地震仪是地质学家研究地震时不可或缺的工具。