English translation for "业务电话系统"

service telephone system

Similar Words：

"业务地区说明" English translation, "业务点" English translation, "业务电报" English translation, "业务电传" English translation, "业务电话" English translation, "业务电路" English translation, "业务电路单元" English translation, "业务电路增音机" English translation, "业务电码" English translation, "业务电台执照" English translation