BS EN 54-16. Fire detection and fire alarm systems. Components for fire alarm voice alarm systems. Part 16. Voice alarm control and indicating equipment
英国标准EN 54-16 火灾探测和火灾报警系统 火灾报警语音报警系统的部件 第16部分 语音报警控制和指示设备
发布日期:
2004-08-16
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