电磁式地震仪
electromagnetic seismometer
电动式地震仪
electrodynamic seismograph
electrodynamic type seismometer
分布式地震仪
distributed seismic instrument
速度式地震仪
velocity-type seismic detector
手提式袖珍X光机
LIXI scope imaging system
袖珍式彩色电视机
pocket-sized color television set