单边带信号发生器
single side band signal generaltor
独立边带设备
independent sideband facilities
独立边带通信
independent sideband communication
超宽带通信信号
ultra-wideband communication signals
宽带通信信道
BBCC BroadBand Communication Channel
微带双通带带通滤波器
microstrip dual bandpass filters
长途通信
LDC Long Distance Communication
toll communication
Long haul optical communication
long distance communication
长途通信的引出线路
OGTC OutGoing Toll Circuit
长途通信光缆
toll communication optical cable
长途通信始发线路
OTC Originating Toll Circuit
长途通信始发中心
OTC Originating Toll Center