ZB X 38002-1988 碘

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MIL-STD-2195A, DEPARTMENT OF DEFENSE TEST METHOD: INSPECTION PROCEDURE FOR DETECTION AND MEASUREMENT OF DEALLOYING CORROSION ON ALUMINUM BRONZE AND NICKEL-ALUMINUM BRONZE COMPONENTS (17 DEC 1993)., This standard provides the inspection activity with the necessary information to inspect aluminum bronze and nickel-aluminum bronze components for dealloying corrosion on surfaces that have come in contact with seawater. Minimum requirements are specified for inspection personnel, equipment, procedures, and acceptance criteria, and for recording and reporting results【英文标准名称】:Acoustics-Referencezeroforthecalibrationofaudiometricequipment-Part3:Referenceequivalentthresholdforcelevelsforpuretonesandbonevibrators
【原文标准名称】:声学校正听力设备的基准零级第3部分:骨振器纯声基准等效閾力级
【标准号】:ISO389-3-1994
【标准状态】:现行
【国别】:国际
【发布日期】:1994-10
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC43
【标准类型】:()
【标准水平】:()
【中文主题词】:声学;校正;听力计;纯普听力图;听力测定;骨振子
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Airconductionhearingaids;Artificialmastoids;Audiobility;Audiometers;Audiometry;Auditorythreshold;Boneconduction;Boneconductors;Bonevibrator;Calibration;Couplers;Datum;Definitions;Earphones;Electricalengineering;Force;Headphones;Hearingabilitytests;Hearingaids;Instruments;Listeningtests;Maskingnoise;Measurement;Measurementconditions;Measurementofthresholdofaudibility;Noise(spurioussignals);Properties;Pure-toneaudiometers;Referencelevels;Referencequantity;Referencesources;Sound;Soundintensity;Specification(approval);Standards;Testequipment;Testingconditions
【摘要】:Specifiesthefollowingdataapplicabletothecalibrationofbonevibratorsforpure-tonebone-conductionaudiometry:referenceequivalentthresholdforcelevels(RETFL),correspondingtothethresholdofhearingofyoungotologicallynormalpersonsbybone-conductionaudiometry;essentialcharacteristicsofthebonevibratorandofitsmethodofcouplingtoapersonundertestandtothemechanicalcoupler;essentialcharacteristicsanddatumlevelofthemaskingnoiseappliedtotheearnotundertest.
【中国标准分类号】:N65;N65
【国际标准分类号】:13_140
【页数】:10P.;A4
【正文语种】:英语