ASTM D2685-2011 用气体色层分离法对六氟化硫中空气和四氟化碳含量的标准试验方法

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【英文标准名称】:StandardTestMethodforAirandCarbonTetrafluorideinSulfurHexafluoridebyGasChromatography
【原文标准名称】:用气体色层分离法对六氟化硫中空气和四氟化碳含量的标准试验方法
【标准号】:ASTMD2685-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:D27.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:空气;四氟化碳;六氟化硫;大气分析;四氟化碳含量
【英文主题词】:air;carbontetrafluoride;sulfurhexafluoride;Airanalysis;Carbontetrafluoridecontent
【摘要】:Airandcarbontetrafluoride(CF4)aretwocontaminantsofinterestinsulfurhexafluoride(SF6).BothofthesecontaminantsadverselyaffecttheperformanceofSF6whenusedasanelectricalinsulatinggas.SpecificationformaximumlevelsofthesecontaminantsaregiveninSpecificationD2472.GaschromatographyisusedtoseparatethesecontaminantsfromasampleofSF6andtodeterminetheirconcentration.1.1Thistestmethodcoversthedeterminationofair(Note1)andcarbontetrafluorideasimpuritiesinsulfurhexafluoride.Note18212;Nitrogen,oxygen,oranyoftheirmixturesisconsideredtobeair.Commercialgradeairornitrogenisusedforstandardization.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:71_060_50
【页数】:3P.;A4
【正文语种】:


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【英文标准名称】:Aerospaceseries.Lamps,incandescent.Lamp,codeA7512-12.Productstandard
【原文标准名称】:航空航天系列.白炽灯.编号为A7512-12的灯具.产品标准
【标准号】:BSEN2240-088-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2011-08-31
【实施或试行日期】:2011-08-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Aerospacetransport;Airtransport;Aircraft;Designations;Dimensions;Electricalengineering;Illuminationengineering;Incandescentlamps;Lamps;Lightingsystems;Productstandards;Spacetransport;Specification(approval)
【摘要】:ThisEuropeanStandardspecifiestherequiredcharacteristicsforlamp,codeA7512-12,foraerospaceapplications.ItshallbeusedtogetherwithEN2756.
【中国标准分类号】:K73
【国际标准分类号】:49_060
【页数】:10P.;A4
【正文语种】:英语


【英文标准名称】:Computerapplicationsinterminology-Datacategories
【原文标准名称】:术语中的计算机应用数据目录
【标准号】:ISO12620-1999
【标准状态】:作废
【国别】:国际
【发布日期】:1999-10
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC37
【标准类型】:()
【标准水平】:()
【中文主题词】:数据元;信息技术;信息交流;数据库;定义;数据处理;术语;类别;计算机辅助;计算机
【英文主题词】:Categories;Computerassistance;Computers;Databases;Dataelements;Dataprocessing;Definitions;Informationexchange;Informationtechnology;Terminology
【摘要】:ThisInternationalStandardspecifiesdatacategoriesforrecordingterminologicalinformationinbothcomputerizedandnon-computerizedenvironmentsandfortheinterchangeandretrievalofterminologicalinformationindependentofthelocalsoftwareapplicationsorhardwareenvironmentsinwhichthesedatacategoriesareused.SomeofthedatacategoriesspecifiedinthisInternationalStandardderiverequirementsfromdefinitionstakenfromotherISOterminologystandards,e.g.,ISO1087andISO5127,soastoharmonizethecontentofdatacategoriesacrosssystemsandtofacilitatedatainterchange.ThesystematicarrangementofdatacategoriesinthisInternationalStandardisdeterminedbydatabasemanagementconsiderationsanddoesnotreflectanytheoreticalarrangementofrelatedtermsandconceptsusedinotherstandards.Ifappliedforthepurposeofinterchangingmachine-readableterminology,itisrecommendedthatthisInternationalStandardbeusedinconjunctionwithISO12200,althoughitcanalsobeusedformodelingterminologicalinformationindependentofcomputerapplications.ItisnotthepurposeofthisInternationalStandardtospecifyactualdatacategoriesusedinlocaldatabaseapplications,becausetranslationroutinescanbeemployedtoconvertapplicationdatacategoriestotheuniversalcategoriesspecifiedhere,providedthatthevaluesofthedataassociatedwiththesecategoriesareharmonizedaccordingtotherelevantdatacategorydefini-tions.ItisalsonotthepurposeofthisInternationalStandardtospecifypreciserelationshipsamongdatacategories,suchasrepeatabilityandcombinability.ThesefeaturesremaintheprovinceoftheindividualdatabaseapplicationandofISO12200.NordoesthisInternationalStandardprescribeamandatorybasesetofdatacategoriesforlocalapplications.ThisInternationalStandarddoesnotspecifydatacategoriesforthemarkupofbibliographicdataentries.ISO12083:1994,annexB,includesbibliographicelementsamongotherelementscitedasusefulinthepreparationandmarkupofmachine-readabledocuments.AnnexBofthisInternationalStandardlistsdatacategoriesthatcorrespondtoelementscitedinISO12083andthatareappropriateforthedocumentationofbibliographiccitationsinterminologicalentries.NOTE-ISO12200:1999,annexB,providesadditionalinformationontheapplicationofthebibliographicelementsinISO12083tothedocumentationofbibliographicinformationinterminologicalentriesforthosecasesinvolvingexchangeofmachine-readableterminology.
【中国标准分类号】:A22
【国际标准分类号】:01_020;35_240_30
【页数】:71P.;A4
【正文语种】:英语