| 1. | The research and development of masking sound system
掩蔽声系统的研究与开发 |
| 2. | Sound system equipment - part 5 : loudspeakers
声系统设备.第5部分:扬声器 |
| 3. | Sound system equipment - part 5 : loudspeakers
声系统设备.第5部分:扬声器 |
| 4. | Sound system equipment - part 4 : microphones
声系统设备.第4部分:传声器 |
| 5. | Sound system equipment - part 4 : microphones
声系统设备.第4部分:传声器 |
| 6. | Application of connectors for broadcast and similar sound system
广播及类似声系统用连接器的应用 |
| 7. | Lead and manage development of acoustic systems and transducers
领导及管理电声系统及变换器的开发 |
| 8. | General specification for power supplies of annoucing system on shipboard
舰船扩声系统电源通用规范 |
| 9. | Jhs - d shift frequency aptitude transmitter mixer : system introduction
海之升数字移频扩声系统简介： |
| 10. | Perferred matching values for the interconnection of sound system components
声系统设备互连的优选配接值 |
