1、发报电键
... receiver收报人 telegraph key发报电键 teleprinter,teletype,teletypewriter电传打字机 ...
2、手键
... 受访公众陆地移动网：visited PLMN (VPLMN) 手键：telegraph key 收码器：Code receiver,receiver ...
3、[通信]电报电键
... telegraph junction circuit 电报汇接电路 telegraph key 电报电键 telegraph modulation 电报调制 ...
4、电报键
...电报继电器|telegraph relay电报键|telegraph key电报交换|telegraph switching ...
Telegraph Test Key电报加密系统
telegraph sending key发报用电键
telegraph h key发报电键
telegraph sounder key[通信] 电报音响器电键
key telegraph button电报局设备中用以快速而容易地接通和断开回路的金属杠杆