双波道双工 double channel duplex

双波道单工 double channel simplex

双波道控制器 controller ; dual channel controller ; dual channel

双波道示波器 oscilloscope ; dual channel oscilloscope ; dual channel

双通道示波器 Oscilloscope ; dual channel virtual oscilloscope ; dual channel oscilloscope

双斜震波进气道 double-oblique shock ; inlet

双向波道 two-way channel

双信道光波分插复用器 DOADM