音响警报装置 meaning in English
audible warning device
audio alerting unit
Examples
- Audible warning device
音响警报装置 - Audio alerting unit
音响警报装置 - Acoustics - stationary audible warning devices used outdoors - field measurements for determination of sound emission quantities
声学.室外用的固定音响警报装置.确定声音发射量的现场测量