【英文标准名称】:Electroacoustics-Specificationsforpersonalsoundexposuremeters
【原文标准名称】:电声学.个人测声表规范
【标准号】:IEC61252Edition1.1-2002
【标准状态】:现行
【国别】:国际
【发布日期】:2002-03
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC29
【标准类型】:()
【标准水平】:()
【中文主题词】:电气设备;定义;定义;电气工程;指示仪表;曝声;规范(验收);动态系统特性;个人测声表;特性;电声学;作标记;声学测量;测量;声级表;曝光计;声学
【英文主题词】:acoustics;exposuremeter;soundexposure;personalsoundexposuremeters;definitions;specification(approval);acousticmeasurement;definition;indicationinstrument;marking;measurement;soundmeters;dynamicsystemsbehaviour;electricalengineering;electricalappliances;electroacoustics;properties
【摘要】:1Soundexposureisaphysicalmeasurethataccountsforboththesoundpressureanditsduration,atagivenlocation,throughanintegral-over-timeofthesquareofinstantaneousfrequency-weightedsoundpressure.2ThisInternationalStandardisapplicabletoinstrumentsformeasurementofA-frequency-weightedsoundexposureresultingfromsteady,intermittent,fluctuating,irregular,orimpulsivesounds.InstrumentscomplyingwiththespecificationsofthisInternationalStandardareintendedtobewornonapersontomeasuresoundexposure.Measurementsofsoundexposureintheworkplacemaybeusefulfordeterminationsofoccupationalnoiseexposure,inaccordancewithISO1999andISO9612.3ThisInternationalStandardspecifiesacousticalandelectricalperformancerequirementsforpersonalsoundexposuremetersofoneaccuracygrade.TheaccuracygradecorrespondstothatforanintegratingsoundlevelmeterwhichcomplieswiththeType2requirementsofIEC60804foranA-weightedsoundpressurelevelrangefrom80dBto130dBandanominalfrequencyrangefrom63Hzto8kHz.4Tolerancesondeviationsofaninstrument'sperformancefromspecifieddesigngoalsrepresenttheperformancecapabilitiesofpracticalinstruments.PersonalsoundexposuremetersarerequiredtooperatewithinthetolerancesofthisInternationalStandardoverspecifiedrangesofenvironmentalconditions.
【中国标准分类号】:L31
【国际标准分类号】:13_140;17_140_50
【页数】:30P.;A4
【正文语种】:英语


【英文标准名称】:CuttingTools–DesignationSystemforExtraHardCuttingSurfaces,BondedtoIndexableInsertsandOtherCarriers
【原文标准名称】:切削刀具.与可转位刀片和其它载体连接的超硬质切削表面的标识系统
【标准号】:ANSIB212.19-1996
【标准状态】:作废
【国别】:美国
【发布日期】:1996-01-01
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:CCPA(ASCB212)
【标准类型】:()
【标准水平】:()
【中文主题词】:名称与符号;镶齿;刀片;硬质合金刀具;切削工具;工具
【英文主题词】:designations;inserts(cuttingtools);cuttingtools;carbidetools;tools;inserts
【摘要】:Coversthedidentificationsystemforindexable-typeinsertsforbothsingle-pointcuttingtoolsandmulti-pointcuttingtools.
【中国标准分类号】:J47
【国际标准分类号】:25_100_01
【页数】:11P.;A4
【正文语种】:英语