GB 6295.3-1986 夹扭剪切两用钳 带刃尖嘴钳
时间:2024-04-27 18:44:56 来源: 标准资料网 作者：标准资料网 阅读：8557
基本信息
| 标准名称： | 夹扭剪切两用钳 带刃尖嘴钳 |
| 中标分类： |
机械 >>
工艺装备 >>
手工工具 |
| 替代情况： | 调整为QB/T 3853.3-1999 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1987-09-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 3页 |
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所属分类： 机械 工艺装备 手工工具
【英文标准名称】:TestMethodforOxygenatesandParaffin,Olefin,Naphthene,Aromatic(O-Pona)HydrocarbonTypesinLow-OlefinSpark-IgnitionEngineFulesbyGasChromatography
【原文标准名称】:利用气相色谱法对石蜡、烯烃、环烃和芳香性物质在低烯烃引擎机油中氧化性的测定方法
【标准号】:ANSI/ASTMD6293-1999
【标准状态】:作废
【国别】:美国
【发布日期】:1999
【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】:分析方法;芳香的;机动车燃料;气相色谱法;气体;煤气;烃类;点火;液体燃料;;链烯;;石蜡;物理化学法;火花点火;火花点火发动机;试验
【英文主题词】:Analyticalmethods;Aromatic;Automotivefuels;Gaschromatography;Gases;Hydrocarbons;Ignition;Liquidfuels;Naphthenes;Olefins;Oxygenates;Paraffin;Physico-chemicalmethods;Sparkignitions;Spark-ignitionengines;Testing
【摘要】:Thistestmethodprovidesforthequantitativedeterminationofoxygenates,paraffins,olefins,naphthenes,andaromaticsinlow-olefinspark-ignitionenginefuelsbymultidimensionalgaschromatography.Eachhydrocarbontypecanbereportedeitherbycarbonnumber(see)orasatotalthroughC10,exceptforolefins,whichcanonlybereportedthroughC9.Higherboilinghydrocarbonscannotbereportedbytypeandarereportedasacompositegroup.Thelowerlimitofdetectionforasinglehydrocarboncomponentorcarbonnumbertypeis0.05mass%.Note1-TherecanbeanoverlapbetweentheC9andC10aromatics;however,thetotalisaccurate.IsopropylbenzeneisresolvedfromtheC8aromaticsandisincludedwiththeotherC9aromatics.NaphthaleneisdeterminedwiththeC11+components.Thistestmethodisapplicablefortotalolefinsintherangefrom0.05to13mass%.Thetestmethodcanquantitativelydetermineolefinsinsampleswheretheolefinconcentrationdoesnotexceed0.6%C4or4.0%C5or4.5%ofthecombinedC4andC5.Althoughtheprecisionforbenzenewasdeterminedintherangefrom0.3to1.0mass%,thistestmethodcanbeusedtodeterminebenzeneconcentrationsupto5.0mass%.Thistestmethodisnotintendedtodetermineindividualhydrocarboncomponentsexceptforthosehydrocarbontypesforwhichthereisonlyonecomponentwithinacarbonnumber.Individuallydeterminedhydrocarbonsarebenzene,toluene,cyclopentane,propane,propylene,andcyclopentene.PrecisiondatahasonlybeenobtainedonsamplescontainingMTBE.Applicationofthistestmethodtodetermineotheroxygenatesshallbeverifiedintheuser'slaboratory.MethanolcannotbedeterminedandshallbequantitatedbyanappropriateoxygenatemethodsuchasTestMethodD4815orD5599.Methanolisfullyresolvedanddoesnotinterferewiththedeterminationofothercomponentsorgroups.Althoughspecificallywrittenforspark-ignitionenginefuelscontainingoxygenates,thistestmethodcanalsobeappliedtootherhydrocarbonstreamshavingsimilarboilingranges,suchasnaphthasandreformates.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E30
【国际标准分类号】:71_040_50;75_160_20
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforChemicalShrinkageofHydraulicCementPaste
【原文标准名称】:水凝水泥浆的化学收缩用标准试验方法
【标准号】:ASTMC1608-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:C01.31
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:水泥浆;水泥;化学的;石膏;水凝水泥;石灰;灰浆;浆糊;收缩;测试
【英文主题词】:chemicalshrinkage;hydration
【摘要】:Numerouspropertiesofcementitiousmaterialsarecontrolledbytheirinitialhydrationrate.Examplesincludeearly-agestrengthdevelopment,heatrelease,andcrackresistance.Onedirectandconvenientmeasureofthisinitialhydrationrateisprovidedbythemeasurementofthechemicalshrinkageofthecementpasteduringitshydration.Ascementhydrates,thehydrationproductsoccupylessvolumethantheinitialreactingmaterials(cementandwater).Duetothisvolumechange,ahydratingcementpastewillsorbwaterfromitsimmediatesurroundings,whenavailable.Atearlytimes,thissorptionisindirectproportiontotheamountofhydrationthathasoccurred.4ThismethodisbasedontheonedevelopedbyGeiker.5Theresultsarerelevanttounderstandingthehydrationbehaviorofcements.Thismethoddoesnotmeasurethebulkvolumechanges(autogenousshrinkage)associatedwithchemicalshrinkagenorthecrackingpotentialofconcretesproducedwiththeevaluatedcement.1.1Thistestmethodmeasurestheinternal(absolute)volumechangeofhydrauliccementpastethatresultsfromthehydrationofthecementitiousmaterials.Thisvolumechangeisknownaschemicalshrinkage.1.1.1ProcedureA,volumetricmethod.1.1.2ProcedureB,thedensitymethod.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(Warning-Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.)
【中国标准分类号】:Q11
【国际标准分类号】:91_100_10
【页数】:4P.;A4
【正文语种】: