communication line adapter for teletype
[计] 电传打字机通信线路适配器
four-wire extension line adapter
[计] 四线扩展适配器
four-wire line adapter
[计] 四线线路适配器
low-speed line adapter
[计] 低速线路适配器
on-line adapter
[计] 联线适配器; 联线衔接器
one-line adapter
[电] 单线配接器
