极浅层地震 very shallow earthquake

浅层地震勘探 Shallow Seismic Exploration ; Shallow seismic prospecting ; Seismic prospecting in thin tectum

超浅层地震 Super shallow earthquake

浅层地震探测 shallow seismic exploration

浅层地震折射 shallow seismic refraction

浅层地震反射法 shallow seismic reflection method

多波浅层地震勘探 Multicomponent seismic exploration in shallow stratum

浅层地震反射探查 high resolving seismic reflection prospecting

计数型浅层地震仪 counting-shallow-layer seismograph