【英文标准名称】:CarbonDistributionandStructuralGroupAnalysisofPetroleumOilsbythen-d-MMethod,MethodofTestfor(05.02)
【原文标准名称】:用n-d-M法对石油进行碳分布和结构组分析的试验方法(05.02)
【标准号】:ANSI/ASTMD3238-1995
【标准状态】:作废
【国别】:美国
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:石油产品;试验;数学计算
【英文主题词】:Carbon;Distribution;Lubricants;Mathematicalcalculations;Petroleumproducts;Testing
【摘要】:Thistestmethodcoversthecalculationofthecarbondistributionandringcontent(Note1)ofolefin-freepetroleumoilsfrommeasurementsofrefractiveindex,densityandmolecularweight(n-d-M).Thistestmethodshouldnotbeappliedtooilswhosecompositionsareoutsidethefollowingranges:Intermsofcarbondistribution-upto75%carbonatomsinringstructure;percentageinaromaticringsnotlargerthan1.5timesthepercentageinnaphthenicrings.Intermsofringcontent-uptofourringspermoleculewithnotmorethanhalfofthemaromatic.Acorrectionmustbeappliedforoilscontainingsignificantquantitiesofsulfur.Note1-Thecompositionofcomplexpetroleumfractionsisoftenexpressedintermsoftheproportionsofaromaticrings(R),naphthenerings(R)andparaffinchains(C)thatwouldcompriseahypotheticalmeanmolecule.Alternatively,thecompositionmaybeexpressedintermsofacarbondistribution,thatis,thepercentageofthetotalnumberofcarbonatomsthatarepresentinaromaticringstructures(%C),naphtheneringstructures(%C),andparaffinchains(%C).ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E21
【国际标准分类号】:75_080
【页数】:
【正文语种】:英语


【英文标准名称】:Cross-countryskis;skibindingscrews;requirements;identicalwithISO7794:1991
【原文标准名称】:越野雪橇.雪橇紧固螺钉.要求
【标准号】:DINISO7794-1992
【标准状态】:作废
【国别】:德国
【发布日期】:1992-04
【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】:公差;滑雪板装配;滑雪板;螺钉;冬季运动设备;越野滑雪板;规范(审批);特性;定义;紧固件;尺寸;名称与符号;材料;体育器材
【英文主题词】:Assembling;Crosscountryskis;Definition;Definitions;Designations;Dimensions;Fasteners;Materials;Properties;Screws(bolts);Skibindings;Skis;Specification(approval);Specifications;Sportsequipment;Tolerances(measurement);Wintersportsequipment
【摘要】:
【中国标准分类号】:Y56;J13
【国际标准分类号】:97_220_20
【页数】:4P.;A4
【正文语种】:德语