English translation for "ring down system signaling equipment"

振铃制信号设备

Similar Words：

"ring dosemeter" English translation, "ring doubling and twisting frames" English translation, "ring doubling frame" English translation, "ring doughunt" English translation, "ring down" English translation, "ring down the curtain" English translation, "ring down trunk signaling" English translation, "ring drawbar" English translation, "ring drier" English translation, "ring drilling" English translation