ISO 6629-1981 铬矿石和铬精矿化学分析法通用指南
时间:2024-05-15 22:05:26 来源: 标准资料网 作者：标准资料网 阅读：8599
【英文标准名称】:Chromiumoresandconcentrates;Methodsofchemicalanalysis;Generalinstructions
【原文标准名称】:铬矿石和铬精矿化学分析法通用指南
【标准号】:ISO6629-1981
【标准状态】:现行
【国别】:国际
【发布日期】:1981-04
【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/TC65
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析;铬;铬矿石;金属矿物;指南;浓缩物;化学分析和试验
【英文主题词】:Chemicalanalysisandtesting;Chromium;Chromiumores;Concentrates;Instructions;Ores
【摘要】:Specifiesgeneralinstructionsconcerningreagents,apparatus,sample,procedure,calibrationgraphsandtestreport.
【中国标准分类号】:D33
【国际标准分类号】:73_060_30
【页数】:2P;A4
【正文语种】:英语
【英文标准名称】:StandardClassificationforServiceabilityofanOfficeFacilityforTypicalOfficeInformationTechnology
【原文标准名称】:办公设备对于典型办公室信息技术的适用性标准分类
【标准号】:ASTME1663-2001
【标准状态】:作废
【国别】:美国
【发布日期】:2001
【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】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:informationtechnology
【摘要】:
【中国标准分类号】:Y54
【国际标准分类号】:35_260
【页数】:14P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforDryandWetBulkDensity,WaterAbsorption,andApparentPorosityofThinSectionsofGlass-FiberReinforcedConcrete
【原文标准名称】:玻璃纤维增强混凝土薄剖面的干燥和潮湿松密度、吸水和表观气孔率用标准试验方法
【标准号】:ASTMC948-1981(2009)
【标准状态】:现行
【国别】:
【发布日期】:1981
【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】:C27.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:密度-混凝土;玻璃纤维增强混凝土(GFRC);气孔率-表观;薄材料规范/应用;吸水-砖块/粘土混凝土
【英文主题词】:Density--concrete;Glassfiberreinforcedconcrete(GFRC);Porosity--apparent;Thinmaterialspecimens/applications--concrete;Waterabsorption--brick/clay/concreteproducts
【摘要】:Materialpropertiesdeterminedbythistestmethodareusefulforqualitycontrolofglass-fiberreinforcedconcrete,ascertainingcompliancewithgoverningspecifications,andresearchanddevelopment.1.1Thistestmethodcoversthedeterminationsofdryandwetbulkdensity,waterabsorption,andapparentporosityofthinsectionsofglass-fiberreinforcedconcrete.Note18212;Thistestmethoddoesnotinvolveadeterminationofabsolutespecificgravity.Therefore,suchporespaceasmaybepresentinthespecimenthatisnotemptiedduringthespecifieddryingorisnotfilledwithwaterduringthespecifiedimmersionisconsideredx201C;impermeablex201D;andisnotdifferentiatedfromthesolidportionofthespecimenforthecalculations,especiallythoseforpercentvoids.Dependingupontheporesizedistributionandtheporeentryradiiofthespecimenandonthepurposesforwhichthetestresultsaredesired,theproceduresofthismethodmaybeadequate,ortheymaybeinsufficientlyrigorous.Intheeventthatitisdesiredtofillmoreoftheporesthanwillbefilledbyimmersion,varioustechniquesinvolvingtheuseofvacuumtreatmentorincreasedpressuremaybeused.Ifarigorousmeasureoftotalporespaceisdesired,thiscanonlybeobtainedbydeterminingabsolutespecificgravitybyfirstreducingthesampletodiscreteparticles,eachofwhichissufficientlysmallsothatnoimpermeablespacecanexistwithinanyoftheparticles.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q23
【国际标准分类号】:91_100_30
【页数】:2P.;A4
【正文语种】: