I.S. EN 50849:2017现行
Sound Systems for Emergency Purposes
出版：National Standards Authority of Ireland
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基本信息
标准编号： I.S. EN 50849:2017
发布时间：2017/3/21 0:00:00
标准类别：Standard
出版单位：National Standards Authority of Ireland
标准页数：30
标准简介
Defines the performance requirements for sound systems which are primarily intended to broadcast information for the protection of lives within one or more specified areas in an emergency.
