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hearing protection
shoot. 护耳用具
tech. 听力保护
UN, tech. 听觉保护用具
hearing protection The total of measures and devices implemented to preserve persons from harm to the faculty of perceiving sound
environ. 听觉保护、听力保健 (为了使个人接受声音的机能免于伤害而采用的方法与设备的总称。)

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