BS 6980 Pt.7-1990 应力腐蚀试验.第7部分:慢速应变率试验方法

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【英文标准名称】:Ophthalmicopticsandinstruments-Electro-opticaldevicesforenhancinglowvision
【原文标准名称】:眼科光学仪器.提高低度视力的电光装置
【标准号】:BSENISO15254-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-07-31
【实施或试行日期】:2009-07-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:对视力的帮助;定义(术语);尺寸规格;溶解;电子光学;放大;扩展;残疾人;放大镜;作标记;操作说明书;眼科设备;眼科光学;眼科学;光学装置;光学仪器;光学;画面尺寸;分辨率;规范(验收);眼镜(夹鼻);测试;视力;弱视者
【英文主题词】:Aidtovision;Definitions;Dimensions;Dissolution;Electrooptics;Enlarger;Enlarging;Handicappedpeople;Magnifiers;Marking;Operatinginstructions;Ophthalmicequipment;Ophthalmicoptics;Ophthalmology;Opticaldevices;Opticalinstruments;Optics;Picturesizes;Resolution;Specification(approval);Spectacles(eyeglasses);Testing;Visualacuity;Weak-sightedpeople
【摘要】:ThisInternationalStandardappliestoelectro-opticaldevicesspecifiedbythemanufacturerforusebyvisuallyimpairedpersons,aslow-visionaids.Itspecifieselectro-opticalandmechanicalrequirementsandtestmethods.ThisInternationalStandarddoesnotcoveropticaldevicesforenhancinglowvisionwhicharespecifiedinISO15253.
【中国标准分类号】:C32
【国际标准分类号】:11_040_70;11_180_30
【页数】:14P.;A4
【正文语种】:英语


【英文标准名称】:Railwayapplications-Methodfordeterminingtheequivalentconicity
【原文标准名称】:铁路设施.等效锥度的测定方法
【标准号】:BSEN15302-2008
【标准状态】:作废
【国别】:英国
【发布日期】:2008-06-30
【实施或试行日期】:2008-06-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:基准;行车机构;驱动类型;精整;数学计算;计算方法;永存性铁路;钢轨;铁轨;铁路设施;铁路建造;铁路车辆零部件;铁道车辆;铁路;圆度;运行性能;路面结构;外围锥度;公差(测量);轨道(物料装卸设备);轮副
【英文主题词】:Benchmarking;Bogies;Drivingstyles;Finishes;Mathematicalcalculations;Methodsofcalculation;Permanentways;Rails;Railwayapplications;Railwayconstruction;Railwayvehiclecomponents;Railwayvehicles;Railways;Roundness;Runningbehaviour;Superstructure;Taperonperiphery;Tolerances(measurement);Tracks(materialshandlingequipment);Wheelsets
【摘要】:ThisEuropeanStandardestablishesanevaluationprocedurefordeterminingequivalentconicity.Abenchmarkcalculationisspecifiedtoachievecomparableresultsonaconsistentbasisfortheequivalentconicity,whichmaybecalculatedbydifferentmethodsnotgiveninthisEuropeanStandard.ThisEuropeanStandardalsoproposespossiblecalculationmethods.InformativeexamplesoftheuseoftheKlingelformula(seeAnnexB)andlinearregressionoftheΔr-function(seeAnnexC)areincludedinthisEuropeanStandard.ThisEuropeanStandardincludesreferenceprofiles,profilecombinations,tolerancesandreferenceresultswithtolerancelimits,whichallowtheusertoassesstheacceptabilityofameasuringandcalculationsystemincludingrandom-andgrid-errorsofthemeasuringsystem.Itsetsdowntheprinciplesofcalculationthatneedtobefollowedbutdoesnotimposeanyparticularnumericalcalculationmethod.ThisEuropeanStandarddoesnotdefinelimitsfortheequivalentconicityandgivesnotolerancesfortherailprofileandthewheelprofiletoachieveacceptableresultsfortheconicity.ForpurposesoutsidethescopeofthisEuropeanStandard(e.g.simulationofvehiclebehaviour)itcanbeusefulornecessarytousemoresophisticatedtheories.ThesemethodsarenotwithinthescopeofthisEuropeanStandard.FortheapplicationofthisEuropeanStandardsomegeneralrecommendationsaregiveninAnnexI.
【中国标准分类号】:S04
【国际标准分类号】:17_040_20;45_060_01
【页数】:122P.;A4
【正文语种】:英语