数字通信复用
digital communication multiplex
数字通信对称电缆
symmetrical cables for digital communications
symmetrical category cable
数字通信端机
digital communication terminal
数字通信电缆
digital communication cable
数字通信传输系统
digital communication transmission system
数字通信
digital communications
digital communication
Digital communi cations
Digital corn municatior
digital communicati on
data communacation
digital commumication
digital communicat
Digital signal processing
digital comm unication
digit correspondence
data communication
serial communication
numeral communication
digitalcom munication
digicom
数字通
GSM Global System for Mobile communication
数字通信复用器
Digital Communication Multiplexer DCM
数字跳频系统
digital frequency-hop system
数字填图技术
digital mapping techniques
数字填图
digital charting
digital mapping technique
数字天线测量
digital antenna measurement
数字天平
digital calculation balance