数字-数字数据变换器
digital-to-digital data converter
带正负号数字数字系统
signed digit number system
多速数字磁带记录
multispeed digital tape recorded
MSDTR
高密度数字磁带
high density digital tape
HDDT
HDDT High Density Digital Tape
高密度数字磁带记录器
high density digital tape recorder
HDDTR
可记录数字视讯光盘
digital video disc recordable
可再写数字视讯光盘
rewritable digital video disc
数字磁带机
digital-magnetic tape machine
数字磁带录音机
digital audio tape recorder
数字视讯
Aerobics integrated teaching
digital video
数字视讯广播
digital video broadcasting
数字视讯互动
digital video interactive