NF S31-127-2009 声学.管道消音器和空气终端装置的实验室测量程序.插入损失、流动噪声和总压力损失
Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss.
NF S31-127-1995 声学.管道消声器的测量程序.插入损耗、流动噪声和总压力损失
Acoustics. Measurement procedures for ducted silencers. Insertion loss, flow noise and total pressure loss.
KS I ISO 7235:2020 声学 - 管道消声器和空气端子单元的实验室测量程序 - 插入损耗 流量噪声和总压力损失
Acoustics — Laboratory measurement procedures for ducted silencers and air-terminal units — Insertion loss,flow noise and total pressure loss
EN ISO 7235:2009 声学.风道消音装置和风道末端装置的实验室测量程序.插入损失,流动噪声和总压力损失
This International Standard specifies methods for determining
Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss
BS EN ISO 7235:2009 声学.风道消音装置和风道末端装置的实验室测量程序.插入损失、流动噪声和总压力损失
This International Standard specifies methods for determining ? the insertion loss, in frequency bands, of ducted silencers with and without airflow
Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss
DS/ISO 7235:1992 声学．管道消音器的测量程序．插入损耗/流动噪声和总压力损失
This International Standard specifies the substitution method for determining the insertion loss of ducted silencers. It sets out requirements
Acoustics. Measurement procedures for ducted silencers. Insertion loss, flow noise and total pressure loss
NF S31-127-2009 声学.管道消音器和空气终端装置的实验室测量程序.插入损失、流动噪声和总压力损失
Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss.
NF S31-127-1995 声学.管道消声器的测量程序.插入损耗、流动噪声和总压力损失
Acoustics. Measurement procedures for ducted silencers. Insertion loss, flow noise and total pressure loss.
KS I ISO 7235:2020 声学 - 管道消声器和空气端子单元的实验室测量程序 - 插入损耗 流量噪声和总压力损失
Acoustics — Laboratory measurement procedures for ducted silencers and air-terminal units — Insertion loss,flow noise and total pressure loss
EN ISO 7235:2009 声学.风道消音装置和风道末端装置的实验室测量程序.插入损失,流动噪声和总压力损失
This International Standard specifies methods for determining
Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss
BS EN ISO 7235:2009 声学.风道消音装置和风道末端装置的实验室测量程序.插入损失、流动噪声和总压力损失
This International Standard specifies methods for determining ? the insertion loss, in frequency bands, of ducted silencers with and without airflow
Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss
DS/ISO 7235:1992 声学．管道消音器的测量程序．插入损耗/流动噪声和总压力损失
This International Standard specifies the substitution method for determining the insertion loss of ducted silencers. It sets out requirements
Acoustics. Measurement procedures for ducted silencers. Insertion loss, flow noise and total pressure loss
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