ISO 2072-1981 主要用于铝生产的氧化铝锌含量的测定PAN光度法
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来源:标准资料网
【英文标准名称】:Aluminiumoxideprimarilyusedfortheproductionofaluminium;Determinationofzinccontent;PANphotometricmethod
【原文标准名称】:主要用于铝生产的氧化铝锌含量的测定PAN光度法
【标准号】:ISO2072-1981
【标准状态】:现行
【国别】:国际
【发布日期】:1981-08
【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/TC47
【标准类型】:()
【标准水平】:()
【中文主题词】:光度测量法(化学分析);化学分析;氧化铝;光度测量法;锌;含量测定;铝;生产;化学分析和试验
【英文主题词】:Aluminium;Aluminiumoxide;Chemicalanalysisandtesting;Determinationofcontent;Photometry;Photometry(chemicalanalysis);Production;Zinc
【摘要】:The1-(2-pyridilazo)-2-naphtholmethodisapplicabletoproductshavingzinccontentsintherangebetween0,002%(m/m)and0,12%(m/m).Alkalinefusionofatestportion,anddissolutionofthefusedmassinnitricacid.Separationofthezincintheformofitsthiocyanatebyextractionwith4-methylpentan-2-one.Re-extractionofthezincwithanaqueoushydrochloricacidsolution.FormationofthePAN-zinccomplex,atpH7,5,inthepresenceoftartaricacid,sodiumthiosulphateand1-nitrose-2-naphthol-3,6-du
【中国标准分类号】:G10
【国际标准分类号】:71_100_10
【页数】:5P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforOpenChannelFlowMeasurementofWaterwithBroad-CrestedWeirs
【原文标准名称】:用宽口堰测量明渠水流量的标准试验方法
【标准号】:ASTMD5614-1994(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1994
【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】:D19.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:dams;flumes;open-channelflow;streamflow;Boundarylayerdisplacement;Broad-crestedweirs;Dams;Flowandflowrate--water;Flumes;Froudenumber;Openchannelflow--water;Reynoldsnumber;Streams;Tailwater;Weirs
【摘要】:Broad-crestedweirscanbeusedforaccuratemeasurementsofawiderangeofflowrates,buttheirstructuralsimplicityandsturdinessmakethemparticularlyusefulformeasuringlargeflowsunderfieldconditions.Becausetheyrequireverticalsidewalls,broad-crestedweirsareparticularlyadaptabletorectangularartificialchannelsortonaturalandartificialchannelsthatcanreadilybelinedwithverticalsidewallsintheimmediatevicinityoftheweir.1.1Thistestmethodcoversmeasurementofthevolumetricflowrateofwaterinopenchannelswithtwotypesofhorizontalbroad-crestedweirs:thosehavingasquare(sharp)upstreamcornerandthosehavingawell-roundedupstreamcorner.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P12
【国际标准分类号】:
【页数】:8P.;A4
【正文语种】:英语
【英文标准名称】:Aerospaceseries-Cables,electrical,aircraftuse-Testmethods-Part601:Smokedensity;GermanandEnglishversionEN3475-601:2007
【原文标准名称】:航空航天系列.航空器用电缆.试验方法.第601部分:烟密度
【标准号】:DINEN3475-601-2008
【标准状态】:现行
【国别】:德国
【发布日期】:2008-11
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:航空航天运输;航空运输;航空器;电缆;定义;导电体;电的;电线;绝缘电缆;绝缘线;绝缘件;数学计算;多语种的;光密度;性能;辐射热传递;烧剥;烟密度;航天运输;规范(验收);样品;测试
【英文主题词】:Aerospacetransport;Airtransport;Aircraft;Cables;Definition;Definitions;Electriccables;Electricconductors;Electrical;Electricalcords;Insulatedcables;Insulatedwires;Insulations;Mathematicalcalculations;Multilingual;Opticaldensity;Properties;Radiativeheattransfer;Scarfing;Smokedensity;Spacetransport;Specification(approval);Specimens;Testing
【摘要】:Thistestmethodisintendedfordeterminationofthespecificopticaldensityofsmokegeneratedbyelectricalwire/cableinsulationmaterialsduetopyroliticdecompositionundertheinfluenceofradiantheatonlyorwithsimultaneousflameapplication.Itisusedforevaluationofinsulationmaterialsofelectricalwire/cableusedintheinteriorsofaerospacevehiclesbutmaybeutilizedinotherapplicationsasspecifiedinapplicableprocurementdocuments.Thisstandardshouldbeusedtomeasureanddescribethepropertiesofproductsinresponsetoheatandflameundercontrolledlaboratoryconditionsandshouldnotbeusedtodescribeorappraisethefirehazardorfireriskofmaterials,products,orassembliesunderactualfireconditions.Howeverresultsofthistestmaybeusedaselementsofafireriskassessmentwhichtakesintoaccountallofthefactorswhicharepertinenttoanassessmentofthefirehazardofaparticularenduse.
【中国标准分类号】:V25
【国际标准分类号】:49_060
【页数】:52P.;A4
【正文语种】:
