BS 5942 Pt.6-1980 高保真度音频设备及系统.最低性能要求.第6部分:放大器规范
时间:2024-05-23 17:01:03 来源: 标准资料网 作者：标准资料网 阅读：8024
【英文标准名称】:Highfidelityaudioequipmentandsystems;minimumperformancerequirements.Specificationforamplifiers
【原文标准名称】:高保真度音频设备及系统.最低性能要求.第6部分:放大器规范
【标准号】:BS5942Pt.6-1980
【标准状态】:作废
【国别】:英国
【发布日期】:1980-09-30
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:信号失真;家用的;性能;衰减;家用设备;电子设备及元件;试验条件;额定功率;通信设备;放大器;频率;音频设备;前置放大器;音频系统;音频放大器;信噪比;功率放大器;放大
【英文主题词】:
【摘要】:
【中国标准分类号】:M72
【国际标准分类号】:33_160_10
【页数】:12P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforMeasuringtheFrictionalPropertiesofWinterContaminatedPavementSurfacesUsinganAveraging-TypeSpotMeasuringDecelerometer
【原文标准名称】:用平均型斑点测量减速计测量冬天受污染路面摩擦性能的标准试验方法
【标准号】:ASTME2101-2000(2005)
【标准状态】:现行
【国别】:
【发布日期】:2000
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E17.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:airportrunwayfriction;braking;deceleration;decelerometer;tirepavementfriction;winterconditions
【摘要】:Knowledgeofthefrictionalpropertiesofawintercontaminatedpavementsurfaceisessentialtoevaluatethebrakingeffortofgroundvehiclesoraircraftoperatingonapavementsurface.Thepresenceofcontaminantsonapavementsurfacewillaffectthefrictionalpropertiesofthesurfaceinamannerwhichisdifficulttoevaluatebyvisualobservationalone.Thefrictionalpropertiesofawintercontaminatedpavementsurfacecanbecharacterizedusingaspotmeasuringdecelerometerwhichprovidesameasurementofthesurfacefrictionandassistswiththeevaluationofpavementwintermaintenancerequirements.Themeasurementsproducedbythistestmethodshouldnotbeusedasthesolecriteriatodeterminepavementwintermaintenancerequirements.Themeasurementswouldnormallybecombinedwithvisualandotherobservationstoprovideamorecompleteanalysisofthepavementsurfaceconditions.Acertainamountofdiscretionisrequiredonthepartoftheoperatorasthistestmethodprovidesonlyax201C;spotx201D;measurementofthesurfacecondition.Theobjectiveoftheoperatoristoidentifyareasofthewintercontaminatedpavementsurfacewhichmayhavelowerfrictionandthenobtainfrictionmeasurementsinthoseareas.Thismakesthetestmethodsomewhatconservativebynatureincomparisontotheactualfrictionpotential.Themeasurementsproducedbythistestmethodaredependentonthetestvehicleparametersandonthebrakingtechniqueofthevehicleoperator.1.1Thistestmethodcoversthemeasurementofthefrictionalpropertiesofwintercontaminatedpavementsurfacesusinganaveraging-typespotmeasuringdecelerometer.Themethodproducesareadingthatisproportionaltothedecelerationsustainedbyatestvehiclefittedwithpneumaticrubbertiresbrakingwithallwheelslocked.Africtionindexforasectionofwintercontaminatedpavementisdeterminedfromtheaverageofseveraldecelerationmeasurementsrecordedoverthesectionofwintercontaminatedpavement.1.2Thistestmethodisapplicabletoaveraging-typespotmeasuringdecelerometers.1.3Thistestmethodisapplicabletothefollowingwintercontaminatedpavementsurfaceconditions:1.3.1Ice;1.3.2Wetice(icecoveredwithathinfilmofmoistureofadepthinsufficienttocausehydroplaning);1.3.3Compactedsnow,anydepth;1.3.4Slushonice,slushnotexceeding3mm(0.1in.)indepth;1.3.5Loose,drysnow,notexceeding25mm(1in.)indepth;1.3.6Icecontrolchemicalsolutiononice;and1.3.7Sandonice.1.4Thistestmethodshallnotbeusedwhenthefollowingwintercontaminatedpavementsurfaceconditionsarepresent:1.4.1Wateronabarepavementsurface;1.4.2Slush;and1.4.3Loosesnowexceeding25mm(1in.)indepth.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareininch-poundunitsandarenotexactequivalents,therefore,eachsystemmustbeusedindependentoftheother,withoutcombiningvaluesinanyway.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P66
【国际标准分类号】:13_020_40
【页数】:4P.;A4
【正文语种】:
【英文标准名称】:HL7Version3Standard:Scheduling,Release1
【原文标准名称】:HL7版本3标准:制表.第1次发布
【标准号】:ANSI/HL7V3SC,R1-2003
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Thisdocumentdescribesamessagingarchitectureforthenotificationofschedulinginformationfromaschedulingsystemtoauxiliarysystems.Themessagesinthisdocumentcanbeutilizedasisforgenericappointmentswhereminimaldetailisrequired.Thissectioncanalsobeusedasapatternforschedulingspecializedacrtivitieswherethedetailsoftheacrtivityarepublishedinmessagesunderthesectionofthisballotresponsibleforthespecializeddomain.
【中国标准分类号】:C07
【国际标准分类号】:35_240_80
【页数】:
【正文语种】:英语