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声响器和蜂鸣器通用技术条件
General specification for sounders and buzzers
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电动式纸盆扬声器制造质量控制要点
Quality control pivot of production for dynamic cone loudspeakers
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音响设备用圆形连接器型号命名方法
The rule of type designation for circular connectors for radio and associated sound equipment
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声响器和蜂呜器测量方法
Methods of measurement for sounders and beeps
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φ200mm电磁式扬声器技术条件
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厅堂扩声系统设备互连的优选匹配值
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碳粒式送话器总规范
General specification for carbon transmitters
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唱针
Phonograph needles
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模拟电唱盘通用技术条件
General technical conditions for analog audio disk players
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