English translation for "四线制电话线路"

four wire telephone circuit
four-wire telephone circuit

Similar Words：

"四线征收通行费设施" English translation, "四线制" English translation, "四线制传输" English translation, "四线制传输线" English translation, "四线制的" English translation, "四线制电路" English translation, "四线制多路复用设备" English translation, "四线制话频电话中继器" English translation, "四线制交换" English translation, "四线制交换中心" English translation