DIN 58741-6-2007 光学加工.镶金刚石的杯形砂轮.第6部分:整套砂轮磨削工具
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【英文标准名称】:Productioninopticalengineering-Diamondimpregnatedcupwheels-Part6:Set-wheelsgrindingtools
【原文标准名称】:光学加工.镶金刚石的杯形砂轮.第6部分:整套砂轮磨削工具
【标准号】:DIN58741-6-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-06
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:连接尺寸;连接器;杯形砂轮;名称与符号;金刚石;金刚石镶嵌;金刚石刀具;用金刚石做顶端的;尺寸;精密机械;磨削;磨削工具;材料;光学;光学加工;工具;两步法
【英文主题词】:Connectingdimensions;Connectors;Cupwheels;Designations;Diamond;Diamondimpregnation;Diamondtools;Diamond-tipped;Dimensions;Finemechanics;Grinding;Grindingtools;Materials;Optics;Productioninopticalengineering;Tools;Two-stage
【摘要】:
【中国标准分类号】:J41
【国际标准分类号】:37_020
【页数】:10P.;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforDeterminingAerobicBiodegradationofPlasticMaterialsintheMarineEnvironmentbyaDefinedMicrobialConsortium
【原文标准名称】:利用规定的微生物团测定塑料材料在海洋环境中需氧生物降解能力的标准试验方法
【标准号】:ASTMD6691-2001
【标准状态】:现行
【国别】:
【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(US-ASTM)
【起草单位】:D20.96
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:塑料;海水;生物降解能力;试验方法
【英文主题词】:aerobic;biodegradation;marineenvironment;plastics
【摘要】:Theuseofplasticsaboardshipsisontheriseandtheuseoftheseaasatrashdumpingsiteisnolongerapossibility;consequently,thedisposalofplasticmaterialswhileatsearemainsamajorissue.Biodegradableplasticsmayhelptoallaypublicconcernbyallowingforthesafedisposalofplasticmaterialsatsea.Thistestmethodhasbeendevelopedtoassesstherateanddegreeofaerobicbiodegradationofplasticsexposedtomarinemicroorganisms.Aerobicbiodegradationisdeterminedbymeasuringtheamountofbiogas(carbondioxide)producedduringsuchanexposure.Thedegreeandrateofaerobicbiodegradabilityofaplasticundertheconditionsofthistestmethodmaybeusedtoestimatethepersistenceofthatplasticinbiologicallyactivemarineenvironments,forexample,seashoreandopen-ocean.However,itshallberecognizedthatpredictinglong-termenvironmentalfateandeffectsfromtheresultsofshort-termexposuretoasimulatedmarineenvironmentisdifficult.Thus,cautionshallbeexercisedwhenextrapolatingtheresultsobtainedfromthisoranyothercontrolled-environmenttesttodisposalinthenaturalenvironment.1.1Thistestmethodisusedtodeterminethedegreeandrateofaerobicbiodegradationofplasticmaterials(includingformulationadditives)exposedtopre-grownpopulationofatleasttenaerobicmarinemicroorganismsofknowngenera.Thetestmethodisconductedundercontrolledlaboratoryconditions.1.2Thistestmethodisdesignedtoindexpolymermaterialsthatarepossiblybiodegradable,relativetoapositivereferencematerial,inanaerobicenvironment.1.3Thistestmethodisapplicabletoallpolymermaterialscontainingatleast20%carbonthatarenotinhibitorytothemicroorganismspresentinamarineenvironment.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.5ThereisnosimilarorequivalentISOstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:13_030_99
【页数】:4P.;A4
【正文语种】:
【英文标准名称】:ERRATUM
【原文标准名称】:勘误表
【标准号】:JISC3216-3ERRATUM1-2011
【标准状态】:现行
【国别】:
【发布日期】:2011-09-01
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:K12
【国际标准分类号】:
【页数】:1P;A4
【正文语种】:日语