噪声降低 meaning in English

noise reduction

Sound insulation and noise reduction for buildings - code of practice
建筑物的隔音和噪声降低.实施规范
Hearing protectors - safety requirements and testing - active noise reduction ear - muffs
护听器.安全要求和试验.有源噪声降低型耳套
Aircraft ground support equipment - general requirements - noise measurement methods and reduction
飞行器地面支持设备.一般要求.噪声测量方法和噪声降低
Road traffic noise reducing devices - non - acoustic performance - general safety and environmental requirements
道路交通噪声降低设备.非声学性能.一般安全和环境要求
Aircraft ground support equipment - general requirements - part 4 : noise measurement methods and reduction
飞行器地面支持设备.一般要求.第4部分:噪声测量方法和噪声降低

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