双声道立体声收音机
two sound track stereo radio
双径水声信道
Double path underwater acoustic channel
双通道侧向扫描声纳
dual channel side scan sonar
双通道回声抵消
Stereo acoustic echo cancellation
双通道回声井深测试仪
double-channel echo well sounder
double-channel echo well depth sounder
双通道声发射分析仪
two-channel acoustic emission analyzer
双通道声级记录仪
two-channel level recorder
单信道双电视节目传输系统
two in one TV transmission system
等效噪声双端口
equivalent noise two-port