| 1. | General specification for sounders and buzzers
声向器和蜂鸣器通用技术条件 |
| 2. | Methods of measurement for sounders and beeps
声响器和蜂鸣器测量方法 |
| 3. | Directional sounders - requirements and tests
定向发声器.要求和试验 |
| 4. | 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 |
| 5. | 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 |
| 6. | Affirming sound ? absorption plant of every operation table can close all sounders
确认任一操作台上消声操作均能关闭所有的蜂鸣器。 |
| 7. | Fire detection and fire alarm systems - part 3 : fire alarm devices - sounders ; german version en 54 - 3 : 2001
火灾探测和报警系统.第3部分:火灾报警装置.警笛 |
| 8. | Sound system equipment - methods for measuring and specifying the performance of sounders electroacoustic transducers for tone production
发声设备.发声器性能规定和测量方法 |
| 9. | Sound system equipment - methods of measuring and specifying the performance of sounders electroacoustic transducers for tone production
声发生设备.发声器的规定性能和测量方法 |
| 10. | It is important to eliminate or degrade the effect caused by the beam width of echo sounders and reflect the true seabed
为提高海底地形的测量精度，应消除或减弱波束角效应影响。 |
