短語詞組短語telegraph automatic relay equipment 電報自動中繼設備;電報自動轉(zhuǎn)接設備automatic telegraph -relay 自動轉(zhuǎn)報telegraph switching relay system 電報交換系統(tǒng)telegraph vibrating relay 電報振動替續(xù)器TARE Telegraph Automatic Relay Equipment 電報自動中繼設備mechanization of telegraph relay 電報中繼的機械化automatic telegraph relay center 自動轉(zhuǎn)報中心automatic telegraph relay equipment [通信]自動電報中繼設備relay for telegraph 電報用繼電器 返回 telegraph relay