数字-数字数据变换器
digital-to-digital data converter
船无线电话数字
ship radiotelephone numeral
带正负号数字数字系统
signed digit number system
地电数字数据
Digital geoelectricity data
多色数字绘图仪
multicolor digital plotter
交互数字绘图器
interactive digital plotter
数据电话数字服务
adjust measures to local conditions
dataphone digital service
DDS
数字电话交换机
Digital Telephone Exchange TXD
digital telephone exchange
数字电话交换局
digital telephone exchange
digital telcphone switching system
数字电话交换业务
digital telephone switching service
Service
digital telephone switching
数字电话网
Digital telephone switching network
digital telephone network
数字电话网络
digital telephone network
Digital Telephone Network DTN