工程地震仪
engineering seismograph
projecting earthquake device
垂直[分量]地震仪
vertical (component) seismograph
海底地震仪
submarine seismograph
sea seismograph
ocean bottom seismometers
Ocean bottom seismometer
ocean bottom seismograph
Bolomey
Ocean -bottom seismic equipment
sea-bottom seismograph
ocean-bottom seismometer (OBS
ocean bottom seismography
submarine se ismograph
Obs
强震仪
strong motion seismograph
strong motion accelerograph
accelerograph
strong-motion instrument
电磁地震仪
electromagnetic seismograph
浅层地震仪
shallow seismograph
shallow-layer seismograph