| 释义 |
〔annunciator〕One that announces, especially an electrical signaling device used in hotels or offices to indicate the sources of calls on a switchboard.信号器,示号器:宣告物,尤指饭店或办公室中使用的一种电子信号装置,用来指示交换台上的呼叫信号来源〔buzzer〕An electric signaling device, such as a doorbell, that makes a buzzing sound.蜂鸣器:可以发出嗡嗡声的一种电子信号装置,如门铃〔box〕A signaling device enclosed in a casing:信号装置:包装上的指示装置: |