NF C93-400-11-11-2002 电子设备连接器.试验和测量.第11-11部分:气候试验.试验11k:低气压
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【英文标准名称】:Connectorsforelectronicequipment-Testsandmeasurements-Part11-11:climatictests-Test11k:lowairpressure.
【原文标准名称】:电子设备连接器.试验和测量.第11-11部分:气候试验.试验11k:低气压
【标准号】:NFC93-400-11-11-2002
【标准状态】:现行
【国别】:法国
【发布日期】:2002-07-01
【实施或试行日期】:2002-07-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电气工程;机电装置;连接器;气候试验;插头和插座连接;测量方法;低压;电子仪器;试验;耐气候性试验
【英文主题词】:
【摘要】:
【中国标准分类号】:L23
【国际标准分类号】:31_220_10
【页数】:7P;A4
【正文语种】:其他
【英文标准名称】:DesignofBelow-the-HookLiftingDevices
【原文标准名称】:吊钩下部提升装置的设计
【标准号】:ANSI/ASMEBTH-1-2011
【标准状态】:现行
【国别】:美国
【发布日期】:2011
【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】:
【英文主题词】:Below;Design;Electricalcomponents;Hooks;Jacks;Liftingdevices;Liftingequipment;Materialshandlingequipment;Mechanical;Structuraldesign
【摘要】:ProvidesminimumstructuralandmechanicaldesignandelectricalcomponentselectioncriteriaforASMEB30.20below-the-hookliftingdevices.TheprovisionsinthisStandardapplytothedesignormodificationofbelow-the-hookliftingdevices.CompliancewithrequirementsandcriteriathatmaybeuniquetospecializedindustriesandenvironmentsisoutsideofthescopeofthisStandard.LiftingdevicesdesignedtothisstandardshallcomplywithASMEB30.20,Below-the-HookLiftingDevices.
【中国标准分类号】:J80
【国际标准分类号】:53_020_30
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforDeterminingtheApparentChlorideDiffusionCoefficientofCementitiousMixturesbyBulkDiffusion
【原文标准名称】:用粒状料扩散法测定水泥混合物表面氯化物扩散系数的标准试验方法
【标准号】:ASTMC1556-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:C09.66
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:测定;扩散系数;表观;氯化物;混合物;扩散
【英文主题词】:chloride;concrete;corrosion;diffusion;iontransport;servicelife
【摘要】:Thistestmethodisapplicabletocementitiousmixturesthathavenotbeenexposedtoexternalchlorideions,otherthanthenegligiblequantityofchlorideionexposurefromsamplepreparationusingpotablewater,priortothetest.Thecalculationproceduredescribedinthistestmethodisapplicableonlytolaboratorytestspecimensexposedtoasodiumchloridesolutionasdescribedinthistestmethod.Thiscalculationprocedureisnotapplicabletospecimensexposedtochlorideionsduringcyclicwettinganddrying.Note18212;Thediffusionofionicspeciesinconcreteoccurswithinthefluid-filledpores,cracksandvoidspaces.Theconcentrationandvalenceofotherionicspeciesintheporefluidalsoinfluencetherateofchloridediffusion,andtherefore,theapparentdiffusioncoefficientasdeterminedbythistestprocedure.Inmostcases,thevalueoftheapparentchloridediffusioncoefficientforcementitiousmixtureschangesovertime(SeeNote2).Therefore,apparentdiffusioncoefficientsobtainedatearlyagesmaynotberepresentativeofperformanceinservice.Note28212;Therateofchangeoftheapparentdiffusioncoefficientforcementitiousmixturescontainingpozzolansorblast-furnaceslagistypicallydifferentthanthatformixturescontainingonlyportlandcement.TheapparentchloridediffusioncoefficientisusedinFickrsquo;secondlawofdiffusiontoestimatechloridepenetrationintocementitiousmixturesthatareinasaturatedcondition.TheapparentchloridediffusioncoefficientiscommonlyusedinchlorideingressmodelsbasedonFickrsquo;secondlawofdiffusion.Theapparentdiffusioncoefficientdeterminedbythismethodincludeschemicallyboundchloride,soproperuseoftheapparentchloridediffusioncoefficienttopredictchlorideingressrequiresconsiderationofchloridebinding.Theresistancetochloridepenetrationisaffectedbysuchfactorsastheenvironment,finishing,mixturecomposition,workmanship,curing,andage.1.1Thistestmethodcoversthelaboratorydeterminationoftheapparentchloridediffusioncoefficientforhardenedcementitiousmixtures.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q13
【国际标准分类号】:71_060_99
【页数】:7P.;A4
【正文语种】:
