Product Code:SAE AMS4188/3
Title:Aluminum Alloy, Welding Wire 5.0si 1.2cu 0.50mg (Cancelled Dec 2002, Superseded by AMS4245)
Issuing Committee:Ams D Nonferrous Alloys Committee
Scope:Primarily for welding, including repair welding, of aluminum alloy castings of similar composition.【英文标准名称】:Acoustics-Referencezeroforthecalibrationofaudiometricequipment-Part9:Preferredtestconditionsforthedeterminationofreferencehearingthresholdlevels(ISO389-9:2009);GermanversionENISO389-9:2009
【原文标准名称】:声学.听力测定设备校正基准点.第9部分:参考听觉阈等级测定用首选测试条件(ISO389-9:2009);德文版ENISO389-9:2009
【标准号】:ENISO389-9-2009
【标准状态】:现行
【国别】:
【发布日期】:2009-12
【实施或试行日期】:2009-12-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Acoustics;Airconductionhearingaids;Airtubes;Audiometers;Audiometry;Auditorythreshold;Calibration;Electricalengineering;Headphones;Measurement;Measurementconditions;Measuringtechniques;Noisebandwidths;Pure-toneaudiometers;Referenceconditions;Referencelevels;Referencemeasuringmethods;Soundpressurelevel;Specification(approval);Testingconditions;Thresholdvalue
【摘要】:
【中国标准分类号】:N65
【国际标准分类号】:13_140
【页数】:17P.;A4
【正文语种】:英语