BS ISO/IEC 13751-2001 信息技术.程序设计语言及其环境和系统软件接口.程序设计语言扩展的APL
时间:2024-05-14 01:49:22 来源: 标准资料网 作者：标准资料网 阅读：8949
【英文标准名称】:Informationtechnology-Programminglanguages,theirenvironmentsandsystemsoftwareinterfaces-ProgramminglanguageExtendedAPL
【原文标准名称】:信息技术.程序设计语言及其环境和系统软件接口.程序设计语言扩展的APL
【标准号】:BSISO/IEC13751-2001
【标准状态】:现行
【国别】:英国
【发布日期】:2001-03-15
【实施或试行日期】:2001-03-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:程序设计语言;程序设计语言;计算机软件;计算机程序;数据处理;程序设计
【英文主题词】:APL;Artificiallanguages;Computersoftware;Dataprocessing;Informationtechnology;Programminglanguages
【摘要】:ThisInternationalStandarddefinestheprogramminglanguageAPLandtheenvironmentinwhichAPLprogramsareexecuted.ItspurposeistofacilitateinterchangeandpromoteportabilityofAPLprogramsandprogrammingskills.ThisInternationalStandardspecifiesthesyntaxandsemanticsofAPLprogramsandthecharacteristicsoftheenvironmentinwhichAPLprogramsareexecuted.ItalsospecifiesrequirementsforconformancetothisInternationalStandard,includingthepublicationofvaluesandcharacteristicsofimplementationpropertiessothatconformingimplementationscanbemeaningfullycompared.ThisInternationalStandarddoesnotspecify:-implementationpropertiesthatarelikelytovarywiththeparticularequipmentoroperatingsystemused;-requiredvaluesforimplementationlimitssuchasAPLworkspacesizeornumericprecision;-thedatastructuresusedtorepresentAPLobjects;-thefacilitiesavailablethroughsharedvariables.
【中国标准分类号】:L74
【国际标准分类号】:35_060
【页数】:294P.;A4
【正文语种】:英语
【英文标准名称】:Safetyofpackagingmachines-Part8:Strappingmachines;GermanversionEN415-8:2008
【原文标准名称】:包装机械的安全性.第8部分:捆包机;德文版本EN415-8-2008
【标准号】:EN415-8-2008
【标准状态】:现行
【国别】:
【发布日期】:2011-06
【实施或试行日期】:2011-06-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Accidentprevention;Cleaning;Dangerofaccident;Dangerousspots;Definitions;Design;Ergonomics;Hazardtoinjuries;Hazards;Healthhazards;Hooping;Hoopingstrap;Instructionsforuse;Maintenance;Man-machine;Marking;Mechanicalengineering;Noiseemissions;Noisereduction;Non-contacting;Occupationalsafety;Packages;Packaging;Packagingmachines;Protectionagainstdanger;Protectiondevices;Protectivemeasures;Safety;Safetymeasures;Safetyofmachinery;Safetyrequirements;Soundpressurelevel;Specification(approval);Strappingmachines;Testing;Transportpacking;Userinformation;Verification;Workplacesafety
【摘要】:
【中国标准分类号】:
【国际标准分类号】:55_200
【页数】:77P.;A4
【正文语种】:英语
【英文标准名称】:StandardGuideforElectrolyticPolishingofMetallographicSpecimens
【原文标准名称】:金相试样电解抛光标准指南
【标准号】:ASTME1558-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E04.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:electrolyticpolishing;electropolishing;polishing;specimenpreparation(metallographic);Alcohol;Alkalineelectrolytes;Chromiumtrioxide;Electrolyticpolishing;Electropolishing;Glacialaceticacid;Metalliccoatings;Metallographicpreparation;
【摘要】:AdvantagesofElectrolyticPolishing:Forsomemetals,ahighqualitysurfacefinishcanbeproducedthatisequivalentto,orbetterthan,thatwhichcanbeobtainedbymechanicalmethods.Onceprocedureshavebeenestablished,satisfactoryresultscanbeobtainedrapidlywithreproducibility.Therecanbeamarkedsavingoftimeifmanyspecimensofthesamematerialarepolishedsequentially.Electropolishingaselectedareaonthesurfaceofarelativelylargemetalpartcanbeaccomplishednondestructively,thatis,withouttheneedforsectioningtoremoveapiece.Soft,single-phasemetals,whichmaybedifficulttopolishbymechanicalmethods,maybesuccessfullyelectropolished.Thetruemicrostructureofaspecimencanbeobtainedbecauseartifacts(suchasdisturbedmetal,scratches,andmechanicaltwins)producedonthesurface,evenbycarefulgrindingandmechanicalpolishingoperations,canberemoved.Thesefeaturesareimportantinlow-loadhardnesstesting,X-raydiffractionstudies,andinelectronmicroscopy,wherehigherresolutionputsapremiumonundistortedmetalsurfaces.Afterelectropolishingiscompleted,etchingcanoftenbeaccomplishedbyreducingthevoltage(generallytoaboutone-tenththatrequiredforpolishing)forashorttimebeforeitisturnedoff.Note28212;Notallelectropolishingsolutionsproducegoodetchingresults.DisadvantagesofElectrolyticPolishing:Manyofthechemicalmixturesusedinelectropolishingarepoisonousordangerousifnotproperlyhandled(seeSection5).Thesehazardsaresimilartothoseinvolvedinthemixingandhandlingofetchants,seeTestMethodsE407.Inmulti-phasealloys,thepolishingrateofeachphasemaybedifferent.Theresultmaybeanon-planarsurface.Electropolishedsurfacesmaybeslightlyundulatedratherthanperfectlyplanarand,therefore,maynotbesuitableforexaminationatallmagnifications.Therateofpolishinginareasadjacenttovariousinhomogeneities,suchasnonmetallicinclusionsandvoids,isusuallygreaterthanthatinthesurroundingmatrixandtendstoexaggeratethesizeoftheinclusionsandvoids.Dimples,pits,andwavinesslimitapplicationsinvolvingsurfacephenomena,coatings,interfaces,andcracks.Edgestendtobeattackedpreferentially,resultinginedgerounding.Artifactsmaybeproducedbyelectropolishing.Specimenmountingmaterialsmayreactwiththeelectrolyte.Theelectropolishedsurfacesofcertainmaterialsmaybepassiveanddifficulttoetch.Metalremovalratesbyelectropolishingareusuallyquitelow,typicallyabout1x03BC;m/min,andallofthepriorinduceddamagefromcuttingandgrindingmaynotberemovedifpreparationisstoppedaftera600-gritSiCgrindandelectropolishingtimesareshort.Alargenumberofelectrolytesmaybeneededtopolishthevarietyofmetalsencounteredbyagivenlaboratory.Considerabletimemayberequiredtodevelopaprocedureforanewalloy.1.1Thisguidedealswithelectrolyticpolishingasameansofpreparationofspecimensformetallographicpurposes.Proceduresaredescribedforpolishingavarietyofmetals.Note18212;References(1-133)onelectrolyticpolishingwillprovidethereaderwithspecificinformationbeyondthescopeofthisguide.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesn......
【中国标准分类号】:H24
【国际标准分类号】:25_220_20
【页数】:14P.;A4
【正文语种】:英语