- a device that gives a visual indication as to which of a number of electric circuits has operated, such as an indicator in a hotel showing in which room a bell has been rung
- a device giving an audible signal indicating the position of a train
| 单词 | annunciator |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 an•nun•ci•a•tor (ə nun′sē ā′tər),USA pronunciation n.
Collins Concise English Dictionary © HarperCollins Publishers:: annunciator /əˈnʌnsɪˌeɪtə/ n
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