English translation for "自动电话步进制"

step-by-step telephone system

Similar Words：

"自动电弧焊头" English translation, "自动电弧熔接" English translation, "自动电话" English translation, "自动电话拔号盘" English translation, "自动电话拨号盘" English translation, "自动电话翻译系统" English translation, "自动电话分局" English translation, "自动电话分配" English translation, "自动电话分配器" English translation, "自动电话付费" English translation