created sense approved 电键/電鍵 · diànjiàn · switch
电键 / 電鍵
diànjiàn
switch
an electrical component designed to connect or break the flow of current in a circuit
这种微型电键常用于精密电子仪器的面板上。
created sense approved 电键/電鍵 · diànjiàn · telegraph key
电键 / 電鍵
diànjiàn
telegraph key
a manual device used to transmit telegraphic signals in Morse code
报务员熟练地敲击着电键发送电码。