SAE AMS4558 Brass, Seamless, Tubing 66.5cu 31.5zn, 1.6pb, Drawn Temper (H58)
时间:2024-05-22 04:50:31 来源: 标准资料网 作者：标准资料网 阅读：8622
Product Code:SAE AMS4558
Title:Brass, Seamless, Tubing 66.5cu 31.5zn, 1.6pb, Drawn Temper (H58)
Issuing Committee:Ams D Nonferrous Alloys Committee
Scope:This specification covers one type of brass in the form of seamless tubing.
【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
【英文标准名称】:Weldingconsumables-Tubularcoredelectrodesforgasshieldedmetalarcweldingofcreep-resistingsteels-Classification.
【原文标准名称】:焊接消耗品.抗蠕变钢的气体保护金属极电弧焊用药芯焊条.分类
【标准号】:NFA81-354-1999
【标准状态】:作废
【国别】:法国
【发布日期】:1999-12-01
【实施或试行日期】:1999-12-20
【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】:
【英文主题词】:
【摘要】:
【中国标准分类号】:J33
【国际标准分类号】:25_160_20
【页数】:13P;A4
【正文语种】:其他