sounders meaning in English
桑德斯
Examples
- General specification for sounders and buzzers
声向器和蜂鸣器通用技术条件 - Methods of measurement for sounders and beeps
声响器和蜂鸣器测量方法 - Directional sounders - requirements and tests
定向发声器.要求和试验 - Fire detection and fire alarm systems - fire alarm devices - sounders
火灾探测和火灾警报系统.火灾警报系统.发声器 - Fire detection and fire alarm systems - part 3 : fire alarm devices - sounders
火灾探测和火警系统.第3部分:火警设备.发声器