hearing protector meaning in Chinese

听觉保护器
听力保护器
听力防护器

Hearing protectors - testing - acoustic test methods
护听器.检验.声学试验方法
Hearing protectors - testing - physical test methods
护听器.试验.物理试验方法
Hearing protectors - safety requirements and testing - ear - plugs
护听器.安全要求和试验.耳塞
Hearing protectors - safety requirements and testing - ear - muffs
护听器.安全要求和试验.耳套
Hearing protectors - general requirements - part 2 : ear - plugs
听力保护器.一般要求.第1部分:耳塞

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