短語詞組短語telephone answering switchboard 電話應答交換臺magneto telephone switchboard switchboard 磁石式交換機man the telephone switchboard 在電話總機上值機magneto telephone switchboard sensor 磁敏元件magneto telephone switchboard lever 磁電機操縱桿magneto telephone switchboard ohmmeter 磁電機式歐姆表magneto telephone switchboard switch 磁電機開關magneto telephone switchboard operation 磁石機的操作automatic telephone switchboard [通信]自動電話交換機;自動交換機;翻譯 返回 telephone switchboard