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高保真扬声器系统最低性能要求及测量方法
Minimum performance requirements and methods of measurement for high fidelity loudspeaker systems
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采用互易技术对φ23.77mm标准电容传声器进行自由场校准的精密方法
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插入式耳机的乳头状接头
Nipples for insert earphones
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号筒扬声器测量方法
Methods of measurement for horn loudspeakers
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号筒扬声器通用技术条件
General specification for horn loudspeakers
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高保真头戴耳机最低性能要求
Minimum performance requirements on high fidelity headphones
价格：￥0.00
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