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International Standard Category: Acoustics and acoustic measurements

JJG 778-2005    Noise Level Statistical Analyzers
噪声统计分析仪 ;
Category No.:17.14 Valid Status:superseded
Issued Organization:AQSIQ Issued Date:2005-4-28
Implemented Date:2005-10-28 Abolished Date:
Superseded Standard.:JJG 778-2019 Noise Level Statistical Analyzers
Superseded Date:2020-3-31
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