带正负号数字数字系统
signed digit number system
数字测震系统
Digital seismological system
数字监测系统
digital monitoring system
数字-数字数据变换器
digital-to-digital data converter
SOS微震监测系统
SOS micro-seismic monitoring system
地震监测系统
earthquake monitoring system
seismic monitoring system
三峡地震监测系统
earthquake monitoring system in Three Gorges area
微震监测系统
microseism monitoring and measuring system
microseismic monitoring system
北美时分多址数字系统
NATDS North American TDMA Digital System
纯二进位数字系统
pure binary numeration system
低速数字系统
LSDS Low Speed Digital System
low speed digital system
LSDS
电力系统数字仿真
Digital Simulation of Power System
Power system digital simulation
电子全球交换数字系统
electronic worldwide switch digital