振鈴電鍵 的英文怎麼說
中文拼音 [zhènlíngdiànjiàn]
振鈴電鍵
英文
bell key-
Control leads that come from 1a2 key telephone sets to operate features like flashing of lights to indicate on hold, line ringing, etc
控制引導,來自1a2按鍵式電話,設置用於一些操作功能,如燈的閃爍用來表示摘機或線路振鈴等等。
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