coaxial cable carrier telephone system 同轴电缆载波电话

subscriber carrier telephone system [通信] 用户载波电话系统

open wire carrier telephone system 明线载波电话系统

single-channel carrier telephone system [通信] 单路载波电话系统

symmetrical cable carrier telephone system 对称电缆载波电话

controlled carrier telephone system 受控载波电话系统

CYK HF carrier telephone system 高频载波电话系统

power line carrier telephone system 电力线载波电话

single channel carrier telephone system 单路载波电话制