国产精品久久久在线观看_亚洲免费观看视频网站_国产盗摄视频一区二区三区_久久久国产一级 - 日本在线观看一区

歡迎來(lái)到寰標(biāo)網(wǎng)！ 客服QQ：772084082 加入會(huì)員

I.S. EN ISO 7235:2003被替代

Acoustics - Laboratory Measurement Procedures For Ducted Silencers And Air-terminal Units - Insertion Loss, Flow Noise And Total Pressure Loss

出版：National Standards Authority of Ireland

獲取原文 如何獲取原文？問客服 獲取原文，即可享受本標(biāo)準(zhǔn)狀態(tài)變更提醒服務(wù)！

專家解讀視頻

基本信息
標(biāo)準(zhǔn)編號(hào)： I.S. EN ISO 7235:2003
發(fā)布時(shí)間：2003/10/28 0:00:00
標(biāo)準(zhǔn)類別：Standard
出版單位：National Standards Authority of Ireland
標(biāo)準(zhǔn)頁(yè)數(shù)：62
標(biāo)準(zhǔn)簡(jiǎn)介

Covers the substitution method for determining the insertion loss of ducted silencers. Also sets out requirements for determining the insertion loss, in frequency bands, of silencers with and without air flow; the sound power level, in frequency bands, of the flow noise generated by silencers; the total pressure loss of silencers with air flow.

替代本標(biāo)準(zhǔn)的新標(biāo)準(zhǔn)

I.S. EN ISO 7235:2009

等同采用的國(guó)際標(biāo)準(zhǔn)

ISO 7235:2003 - Identical

NS EN ISO 7235 Ed. 2 (2003) - Identical

ONORM EN ISO 7235:2003 - Identical

DIN EN ISO 7235 (2004-02) - Identical

BS EN ISO 7235:2003 - Identical

NEN EN ISO 7235:2003 - Identical

SN EN ISO 7235:2003 - Identical

UNI EN ISO 7235:2005 - Identical

NBN EN ISO 7235:2003 - Identical

UNI EN ISO 7235:1997 - Identical

NF EN ISO 7235:2004 - Identical

UNE EN ISO 7235:2004 - Identical

SS EN ISO 7235 Ed. 2 (2004) - Identical