Chinese translation for "manual relay system (manual exchange) telegraphic communication"

[电学] 人工转报系统（人工交换机），电报通信

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"manual record locking" Chinese translation, "manual record unlocking" Chinese translation, "manual reduction of internal abdominal hernia" Chinese translation, "manual reduction of prolapsed enterostomy" Chinese translation, "manual relay system (manual exchange)" Chinese translation, "manual relay system with perforated tapes" Chinese translation, "manual remote control" Chinese translation, "manual remote handling tool" Chinese translation, "manual repair of obstetrical inverted uterus" Chinese translation, "manual replacement of nonobstetric inverted uterus" Chinese translation