English translation for "继电器式自动电话交换制"

relay automatic telephone system

Similar Words：

"继电器式系统" English translation, "继电器式选择器" English translation, "继电器式循环定时器" English translation, "继电器式周期定时器" English translation, "继电器式自动电话交换机" English translation, "继电器式自动电话系统" English translation, "继电器释放" English translation, "继电器释放值" English translation, "继电器室" English translation, "继电器试验" English translation