DIN 51001-2003 氧化原材料和基础材料检验.X射线荧光法通用作业基础

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【英文标准名称】:Testconditionsforboringandmillingmachineswithhorizontalspindle-Part2:Table-typemachines
【原文标准名称】:卧式镗铣床检验条件精度检验第2部分:台式机床
【标准号】:ISO3070-2-1997
【标准状态】:作废
【国别】:国际
【发布日期】:1997-07
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC39
【标准类型】:()
【标准水平】:()
【中文主题词】:卧式铣床;机床;精密度;再现性;数值控制;位置控制;铣床;镗床;钻床;生产精度;尺寸测量
【英文主题词】:
【摘要】:ThispartofISO3070specifies,withreferencetoISO230-1andISO230-2,geometrictests,testsandtestsforcheckingaccuracyandrepeatabilityofpositioningbynumericalcontrol,ongeneralpurpose,normalaccuracy,tabletypeboringandmillingmachineswithhorizontalspindle.Thesetypesofmachinetoolsaredefinedinsub-clause3.1ofISO3070-0:1982.ThispartofISO3070alsospecifiestheapplicabletolerancescorrespondingtotheabovementionedtests.Thesemachinescanbeprovidedwithspindleheadsofdifferenttypescorrespondinginmostcasestofigures:4(spindleheadwithslidingboringspindleandmillingspindle)5(spindleheadwithslidingboringspindleandwithfacinghead)6(spindleheadwithramormillingram)ofISO3070-0:1982.Inaddition,itshouldbenotedthatthispartofISO3070concernsmachineswhichhavebothlongitudinal(W-axis)andtransverse(X-axis)movementofthetable,averticalmovementofthespindlehead(Y-axis)andmayincludearotaryorindexingtable.ThisInternationalStandarddealsonlywiththeverificationoftheaccuracyofthemachine.Itdoesnotapplytothetestingoftherunningofthemachine(vibration,abnormalnoise,stick-slipmotionofcomponents,etc.)nortomachinecharacteristics(suchasspeeds,feeds,etc.),assuchchecksaregenerallycarriedoutbeforetestingtheaccuracy.
【中国标准分类号】:J54
【国际标准分类号】:25_080_20;25_080_40
【页数】:41P;A4
【正文语种】:英语


【英文标准名称】:Methodsofmeasurementforconsumer-usedigitalVTRs-Electronicandmechanicalperformances
【原文标准名称】:消费者使用的数字VTRs的测量方法.电子和机械性能
【标准号】:IEC62122-2002
【标准状态】:现行
【国别】:国际
【发布日期】:2002-03
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC100
【标准类型】:()
【标准水平】:()
【中文主题词】:译码;盒式录像带;质量;娱乐电子学;额定值;视频设备;录像带;家用盒式录象机制式;代码;磁带录像机;电性质和电现象;磁带记录;视频记录;机械性能;录像系统;数字记录法;数字的;数字录制技术;定义;测量技术;评定;规范(验收)
【英文主题词】:Codes;Decoding;Definitions;Digital;Digitalrecordingmethods;Digitalrecordingtechnique;Electricalpropertiesandphenomena;Entertainmentelectronics;Evaluations;Magnetictaperecordings;Measuringtechniques;Mechanicalproperties;Quality;Ratings;Specification(approval);VHS;Videocassettes;Videoequipment;Videorecording;Videorecordingsystems;Videotaperecorders;Videotapes
【摘要】:Thisstandardspecifiesthebasicmethodsofmeasurementforevaluatingtheelectronicandmechanicalperformancesofconsumer-usedigitalVTRs.TheformatsofopenreelVTRs,Beta,VHS,and8mmVTRshavebeenstandardized.MethodsofmeasurementfortheseanalogueVTRshavebeenstandardizedinIEC61041-1,IEC61041-2,IEC61041-3,IEC61041-4,IEC61041-5,andIEC61146-3.DigitalVTR6,35mmDVformatand12,65mmD-VHSformathavenowbeenbroughtonthemarket.Themethodsofmeasurementfortheseconsumer-usedigitalVTRsshouldbespecifiedandstandardized.Withthesemeasurementtechniques,someitemsfortheevaluationofperformancesspecifictodigitalVTRshavealsobeenincluded.Therearetwoobjectivesfortheproposedmethodsofmeasurement.Oneistochecktheinterchangeabilityandcharacteristicsoftheequipmentundertestwhichareindispensabletomanufacturers,andtheotheristoevaluatethequalityofimageandsound,whichconcernsthecustomer.Thelatterisapriorityforconsumersatisfaction.Sinceaconsumercanuseonlygeneral-purposeinstruments,anytestwhichneedsdismantlingofapparatusandrequiresspecialinstrumentsisinprinciplenotspecified.Aserrorrateisimportantfordigitalequipment,anexampleofamethodformeasuringerrorrateisgiveninannexA.
【中国标准分类号】:L04
【国际标准分类号】:33_160_40
【页数】:47P.;A4
【正文语种】:英语