English translation for "two frequency calling channel"

双频呼叫信道

Similar Words：

"two forward motion key" English translation, "two four" English translation, "two frame gyroscope" English translation, "two free throw" English translation, "two free-end saddles" English translation, "two frequency duplex" English translation, "two frequency interrogation" English translation, "two frequency laser" English translation, "two frequency method" English translation