共电式电话机 common battery telephone ; collective-electric telephone ; common-battery telephone set ; common battery telephone apparatus
共电式电话交换机 common battery private branch exchange ; common battery telephone exchange
共电式交换机 common battery switchboard ; common battery exchange
共电式电话 common battery telephone ; common battery type telephone
共电式交换台 central battery switchboard ; CBS CentralBatterySwitchboard
共电式话机 CBA
共电式发信号 common-battery signaling
人工共电式交换台 manual common battery switchboard
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