?终话指示吊牌

... clearing-out drop 终话指示吊牌 clearing-out sale 票据交换所自动支付系统 clearing out signal 终话讯号 ...

[通信]?话终吊牌

... 话终电键 clearing key 话终吊牌 clearing out drop; clearing-out drop; ring off drop 话终断路器 disconnector release ...