ASTM B364-1996(2002) 钽及钽合金铸锭标准规范
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【英文标准名称】:StandardSpecificationforTantalumandTantalumAlloyIngots
【原文标准名称】:钽及钽合金铸锭标准规范
【标准号】:ASTMB364-1996(2002)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:B10.03
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:核技术;钽;有色金属;钽合金;合金;核能;铸锭
【英文主题词】:chemistry;mechanicalproperties;tantalum;tantalumalloy
【摘要】:1.1Thisspecificationcoversunalloyedandalloyedtantalumingotspreparedbyvacuum-arcmelting,electron-beammelting,orpowder-metallurgyconsolidationtoproduceconsolidatedmetalforprocessingtovariousmillshapes.1.2Thematerialscoveredbythisspecificationare:1.2.1R05200,unalloyedtantalum,electron-beamfurnaceorvacuum-arcmelt,orboth,1.2.2R05400,unalloyedtantalum,powder-metallurgyconsolidation,1.2.3R05255,tantalumalloy,90%tantalum10%tungsten,electron-beamfurnaceorvacuum-arcmelt,orboth,1.2.4R05252,tantalumalloy,97.5%tantalum2.5%tungsten,electron-beamfurnaceorvacuum-arcmelt,orboth,and,1.2.5R05240tantalumalloy,60%tantalum40%columbium,electron-beamfurnaceorvacuum-arcmelt,orboth.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.
【中国标准分类号】:H63
【国际标准分类号】:77_150_99
【页数】:2P.;A4
【正文语种】:
【英文标准名称】:Industrialcommunicationnetworks-Fieldbusspecifications-Part5-11:Applicationlayerservicedefinition-Type11elements
【原文标准名称】:工业通讯网络.数据总线规范.第5-11部分:应用层设备定义.11型元件
【标准号】:IEC61158-5-11-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-12
【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/SC65C
【标准类型】:()
【标准水平】:()
【中文主题词】:应用层;应用;总线系统;总线;电路网络;通信;计算机应用;计算机控制;控制;控制设备;控制系统;控制工艺学;数据总线;数据通信;数据交换;数据传输线;数据连接系统;数据网络;数据处理;数据设备;数据传送;数据传输控制规程;定义;数字的;数字数据;数字工程;电子数据处理;电气工程;电子仪器;电子系统;现场总线;制导系统;工业的;工业设施;信息交换;信息处理;信息技术;接口(数据处理);开放系统互连;操作技术;OSI;过程控制工程;服务设施;规范;规范(验收);传输媒质
【英文主题词】:Applicationlayer;Applications;Bussystems;Buses(dataprocessing);Circuitnetworks;Communication;Communicationtechnology;Computerapplications;Computerizedcontrol;Control;Controlequipment;Controlsystems;Controltechnology;Databus;Datacommunication;Dataexchange;Dataline;Datalinksystem;Datanetwork;Dataprocessing;Dataservices;Datatransfer;Datatransmissioncontrolprocedures;Definitions;Digital;Digitaldata;Digitalengineering;EDP;Electronicinstruments;Electronicsystems;Englishlanguage;Fieldbus;Guidancesystems;Industrial;Industrialfacilities;Informationinterchange;Informationprocessing;Informationtechnology;Interfaces(dataprocessing);Opensystemsinterconnection;Operationaltechniques;OSI;Physicallayers;Processcontrolengineering;Services;Specification;Specification(approval);Transmissionmedia
【摘要】:1.1OverviewThefieldbusApplicationLayer(FAL)providesuserprogramswithameanstoaccesstheFieldbuscommunicationenvironment.Inthisrespect,theFALcanbeviewedasa“windowbetweencorrespondingapplicationprograms.”ThispartofIEC61158providescommonelementsforbasictime-criticalandnon-time-criticalmessagingcommunicationsbetweenapplicationprogramsinanautomationenvironmentandmaterialspecifictoType11fieldbus.Theterm“time-critical”isusedtorepresentthepresenceofatime-window,withinwhichoneormorespecifiedactionsarerequiredtobecompletedwithsomedefinedlevelofcertainty.Failuretocompletespecifiedactionswithinthetimewindowrisksfailureoftheapplicationsrequestingtheactions,withattendantrisktoequipment,plantandpossiblyhumanlife.1.2SpecificationsTheprincipalobjectiveofthispartofIEC61158istospecifythecharacteristicsofconceptualapplicationlayerservicessuitablefortime-criticalcommunications,andthussupplementtheOSIBasicReferenceModelinguidingthedevelopmentofapplicationlayerprotocolsfortimecriticalcommunications.Asecondaryobjectiveistoprovidemigrationpathsfrompreviously-existingindustrialcommunicationsprotocols.ItisthislatterobjectivewhichgivesrisetothediversityofservicesstandardizedasthevariousTypesofIEC61158,andthecorrespondingprotocolsstandardizedinIEC61158-6.ThisspecificationmaybeusedasthebasisforformalApplicationProgramming-Interfaces.Nevertheless,itisnotaformalprogramminginterface,andanysuchinterfacewillneedtoaddressimplementationissuesnotcoveredbythisspecification,includinga)thesizesandoctetorderingofvariousmulti-octetserviceparameters,andb)thecorrelationofpairedrequestandconfirm,orindicationandresponse,primitives.1.3ConformanceThispartofIEC61158donotspecifyindividualimplementationsorproducts,nordotheyconstraintheimplementationsofapplicationlayerentitieswithinindustrialautomationsystems.Thereisnoconformanceofequipmenttothisapplicationlayerservicedefinitionstandard.Instead,conformanceisachievedthroughimplementationofconformingapplicationlayerprotocolsthatfulfilanygivenTypeofapplicationlayerservicesasdefinedinthispartofIEC61158.
【中国标准分类号】:N18;P76
【国际标准分类号】:25_040_40;35_100_70;35_160
【页数】:88P;A4
【正文语种】:英语
【英文标准名称】:Methodsofmeasurementforequipmentusedinterrestrialradio-relaysystems.Part2:Measurementsforsub-systems.SectionFour-Frequencymodulators
【原文标准名称】:地面无线电中继系统所用设备的测量方法第2部分:分系统测量第4节:频率调制器
【标准号】:IEC60487-2-4-1984
【标准状态】:现行
【国别】:国际
【发布日期】:1984
【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/TC102
【标准类型】:()
【标准水平】:()
【中文主题词】:无线电中继系统;无线电设备;无线电工程;无线电通信;测量;调制器;微波;电气工程;特性;定义;解调器;调频器;通信链路;调频;规范(批准);划痕试验程序
【英文主题词】:Definitions;Demodulators;Electricalengineering;Frequencymodulation;Frequencymodulators;Measurement;Measuringtechniques;Microwaves;Modulators;Properties;Radioengineering;Radioequipment;Radiocommunication;Radio-relaysystems;Scoringprocedures(tests);Specification(approval);Subsystems;Telecommunicationlinks;Terrestrial
【摘要】:Appliestotheelectricalcharacteristicsoffrequencymodulators.Wherepossible,onlymeasurementsofthebasicmodulatorareinvolved,thatisexcludingthebasebandsectioncomprisingthepre-emphasisnetworkandthenetworksassociatedwithsoundca
【中国标准分类号】:M36;M74
【国际标准分类号】:33_060_30
【页数】:24P.;A4
【正文语种】:英语
