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头戴式抗噪声送受话器组、受话器组和耳罩总规范
General specifications for anti-noise head set, receiver set and earpieces
价格:¥0.00
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通信电声器件与设备的机械接口
Mechanical interface between communication electro -- acoustic device and equipment
价格:¥0.00
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军用电声器件型号命名方法
Type designation system for of military electroacoustic devices
价格:¥0.00
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有源抗噪声送受话器组通用规范
General specification for active ant-noise transmitter and receiver
价格:¥0.00
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