in-seam seismograph

例句：

1. 1.The in-seam seismograph was used to monitor the earthquake activity in the area.
   使用缝内地震仪监测该地区的地震活动。
2. 2. The in-seam seismograph was a crucial tool for studying earthquakes.
   缝内地震仪是研究地震的重要工具。
3. 3. The in-seam seismograph detected an unusually strong earthquake in the region.
   缝内地震仪在该地区探测到了一次异常强烈的地震。