MIL-S-46860B
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来源:标准资料网
MIL-S-46860B, MILITARY SPECIFICATION: SOLDERING OF METALLIC RIBBON LEAD MATERIALS TO SOLDER COATED TERMINALS, PROCESS FOR REFLOW (15 OCT 1976) [S/S BY MIL-STD-2000A]., This specification covers a process for reflow surfacesoldering metallic ribbon materials to solder coated terminal areas on printed board assemblies.
【英文标准名称】:Postalservices-Mailitemprocessing-Opticalcharacteristicsforprocessingletters
【原文标准名称】:邮政服务.邮件处理.处理信件的光学特征
【标准号】:BSEN13619-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-11-28
【实施或试行日期】:2002-11-28
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:邮件处理机器;邮政;邮政;字符识别;光学字符识别;信函;文本处理;识别;定义;地址码
【英文主题词】:
【摘要】:ThisEuropeanStandardspecifiesopticalcharacteristicsforprocessinglettersandgivesguidelinesonthevaluesoftheseattributesthatwillassureahighlevelofaddressreadability.ItisaimedatfacilitatingrelationsbetweenPostalOperatorsandCustomersbyprovidinginformationthatmailerscanusetoensurethattheaddressestheyprintcanbeprocessedsuccessfullybypostalautomationsystems.Thestandardisintendedtosupport:??assessmentoftheprobablereadabilityofaprintedaddress,usinggivenaddressrecognitionequipment,withoutactuallysubmittingittotheequipment;??determinationofthechangesinaddressprintingcharacteristicsthatarerequiredtoachieveadesiredlevelofaddressreadabilityusinggivenaddressrecognitionequipment;??assessmentofthecomplexity,andthusthecost,oftheaddressrecognitionequipmentneededtoachieveadesiredlevelofreadabilityofaddresseswithgivenprintingcharacteristics.ThestandardappliestomailitemswhosesizeisuptoandincludingC51,butmayalsobeappliedtooversizeitems,commonlyreferredtoasC5+,andtoflats.Theaddressblockscoveredare:??thedeliveryaddressblock;??thesenderaddressblockifthisisprintedonthesamesideofthemailitemasthedeliveryaddressblock.Theguidelinesprovidedinthestandardapplytoaddressblocksastheyappearonfinishedmailitemswhensubmittedtopostaloperators,andnotjusttoaddressesandthesubstrateonwhichtheyareprinted.Usersofthestandardareresponsiblefordeterminingthephysicalparameterswhicharerequiredtoachievecomplianceaftertakingaccountofcharacteristicswhichresultfrommailitemfeatures,otherthanprinting,suchascovering,theuseoftransparentwindowenvelopesandtheuseofaddresslabels.Theguidelinesarebasedonphysicalattributesthattendtoinfluencethereadabilityofaddressesbyopticalcharacterrecognition(OCR)equipmentandbyvideo-coders.Totheextentthatthisispossible,attributeshavebeenselectedsoastobeeasilycontrollableandtobemeasurableusingsimple,low-cost,means.Theattributevaluesgivenarebasedoncommonnotionsoftypographyandoncolourreferencesystemsthatarelikelytobeknownbymailers.Thevaluesgivenshouldbeinterpretedasrecommendationsorguidelines,notasstrict,mandatory,all-or-nothingrules.OCRsystemsarecomplexandtheirbehaviouristhereforenoteasilymodelledbysimpleattributes.Asaresulttheambitionofthestandardislimitedbythedifficultyofdefiningsomeattributesinformalterms,eventhoughtheirinfluenceonaddressreadabilityhasbeenproven.Wherethisisthecase,thestandardusesexamples,listsofpreferredvalues,orliteraldescriptionstogivehintsonhowtomaximiseaddressreadability.Sinceallattributesdonotcontributeuniformlytothereadabilityofanaddress,thestandardidentifiestwolevelsofsalienceforeachattribute(highandnormal).Thesetwolevelsaredesignedtoaidinthedefinitionofreadabilityclassesbyusersofthestandard.Thisstandardconsidersaprintedaddressasbeingmadeupofaseriesoflinesofprintedinformation2.Guidelinesrelatedtosuchaddresslinesarerelevantforalllinesinanaddressblock.
【中国标准分类号】:M82
【国际标准分类号】:03_240
【页数】:26P;A4
【正文语种】:英语
Product Code:SAE AMS7906
Title:Beryllium Bars, Rods, Tubing, and Shapes, Standard Grade
Issuing Committee:Ams G Titanium And Refractory Metals Committee
Scope:This specification covers beryllium in the form of bars, rods, tubing, and machined shapes from vacuum hot pressed powder.
