IEEE 802.11p-2010 信息技术.系统间的通信和信息交换.局域网和城域网.特殊要求.第1部分:无线局域网媒体访问控制(MAC)和物理层(PHY)规范.修改件6:车辆环境中的无线访问
时间:2024-05-05 01:29:17 来源: 标准资料网 作者：标准资料网 阅读：9742
【英文标准名称】:Informationtechnology-Telecommunicationsandinformationexchangebetweensystems-Localandmetropolitanareanetworks-Specificrequirements-Part1:WirelessLANMediumAccessControl(MAC)andPhysicalLayer(PHY)Specifications-Amendment6:Wi
【原文标准名称】:信息技术.系统间的通信和信息交换.局域网和城域网.特殊要求.第1部分:无线局域网媒体访问控制(MAC)和物理层(PHY)规范.修改件6:车辆环境中的无线访问
【标准号】:IEEE802.11p-2010
【标准状态】:作废
【国别】:美国
【发布日期】:2010-01-01
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(US-IEEE)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:传播方式;无绳的;数据网络;数据处理;数据安全;数据传送;定义;信息处理;接口(数据处理);局部地区网络(LAN);局域网;MAN;网络互连;物理层;保护措施;无线的;无线局域网
【英文主题词】:Communicationprocesses;Cordless;Datanetwork;Dataprocessing;Datasecurity;Datatransfer;Definitions;Informationprocessing;Interfaces(dataprocessing);LAN;Localareanetworks;MAN;Networkinterconnection;Physicallayers;Protectivemeasures;Wireless;WLAN
【摘要】:
【中国标准分类号】:L78
【国际标准分类号】:35_110
【页数】:51P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforpHofAtmosphericWetDepositionSamplesbyElectrometricDetermination
【原文标准名称】:电测法测定大气湿沉积物样品pH值的标准试验方法
【标准号】:ASTMD5015-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D22.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验方法;沉积物;大气;pH值;湿的
【英文主题词】:atmosphericdeposition;hydrogenion;lowionicstrengthsolutions;pH;precipitation;wetdeposition;
【摘要】:TheaccuratemeasurementofpHinatmosphericwetdepositionisanessentialandcriticallyimportantcomponentinthemonitoringofatmosphericwetdepositionfortrendsintheacidityandoverallairquality.Atmosphericwetdepositionis,ingeneral,alowionicstrength,unbufferedsolution.Specialprecautions,asdetailedinthistestmethod,arenecessarytoensureaccuratepHmeasurements(1).3Specialemphasismustbeplacedonminimizingtheeffectoftheresidualliquidjunctionpotentialbias.ThistestmethodisapplicableonlytothemeasurementofpHinatmosphericwetdeposition.Itsuseinotherapplicationsmayresultininaccuracies.Fig.1providesafrequencydistributionofprecipitationpHvaluesmeasuredinconjunctionwithanationalmonitoringprogramwithintheUnitedStates.ThesedataareanindicationoftherangeofpHvaluescommontoatmosphericwetdeposition.FIG.1FrequencyDistributionofMeasuredLaboratorypHofAtmosphericWetDepositionFromthe1984NationalAtmosphericDepositionProgram(NADP)/NationalTrendsNetwork(NTN)1.1ThistestmethodisapplicabletothedeterminationofpHinatmosphericwetdepositionsamplesbyelectrometricmeasurementusingeitherapHhalfcellwithareferenceprobeoracombinationelectrodeasthesensor.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z15
【国际标准分类号】:71_040_50
【页数】:6P.;A4
【正文语种】:
Product Code:SAE AMS4311
Title:Aluminum Alloy, Rolled Or Forged Rings 5.6zn 2.5mg 1.6cu 0.23cr (7075-T7351, 7075-T352) Solution Heat Treated, Mechanically Stress Relieved, and Precipitation Heat Treated
Issuing Committee:Ams D Nonferrous Alloys Committee
Scope:This specification covers an aluminum alloy in the form of rolled or forged rings.