您的位置: 标准下载 » 国际标准 » BS 英国标准 »

BS EN 14725-2003 航天工程.检定

时间:2024-05-20 22:14:49 来源: 标准资料网 作者:标准资料网 阅读:8520
下载地址: 点击此处下载
【英文标准名称】:Spaceengineering-Verification
【原文标准名称】:航天工程.检定
【标准号】:BSEN14725-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-12-22
【实施或试行日期】:2003-12-22
【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】:
【英文主题词】:
【摘要】:ThisEuropeanStandardestablishestherequirementsfortheverificationofaspacesystemproduct.Itspecifiesthefundamentalconceptsoftheverificationprocess,thecriteriafordefiningtheverificationstrategyandtherulesfortheimplementationoftheverificationprogramme.ItincludesalsoinannexesAandBthedescriptionoftherequireddocumentation(i.e.DRDs)andsomeguidelinesonspecificaspectsoftheverificationprocesssuchasthemodelphilosophydefinition.ThisEuropeanStandardisintendedtoapplytodifferentproductsatdifferentlevels(i.e.fromasingleequipmenttotheoverallsystem).Itisapplicabletoboththecustomerandthesupplieroftheproductduringallprojectphases.Theapplicationoftheserequirementstoaparticularprojectisintendedtoresultinaneffectiveproductverificationandconsequentlytoahighconfidenceinachievingsuccessfulproductoperationsfortheintendeduse.InpreparingthisEuropeanStandardthefollowinggoalshavebeenconsideredtofacilitateitsapplication,effectiveuseandtailoring:—definitionofanenvelopeofthesetsofminimumverificationrequirementsapplicabletothedifferentproducts,sothattailoringisaselection(inreduction)process;—clearidentificationofmandatoryrequirements,tailorablerequirementsandrecommendationsbymeansoftheappropriateuseof"shall","should"and"may"respectively;—textdefiningrequirementsshouldbeself-standingtothegreatestpossibleextent,toallowdirecttailoring.Whenviewedfromtheperspectiveofaspecificprojectcontext,therequirementsdefinedinthisstandardshouldbetailoredtomatchthegenuinerequirementsofaparticularprofileandcircumstancesofaprojectandwithreferencetoannexB.2.NOTETailoringisaprocessbywhichindividualrequirementsofspecifications,standardsandrelateddocumentsareevaluated,andmadeapplicabletoaspecificprojectbyselection,andinsomeexceptionalcases,modificationofexistingoradditionofnewrequirements.
【中国标准分类号】:V04
【国际标准分类号】:49_140
【页数】:152P;A4
【正文语种】:英语


【英文标准名称】:Weldingtermsandsymbols-Supplement-Definitionsforelectricweldingequipment
【原文标准名称】:焊接术语与符号.补充.电焊设备的定义
【标准号】:BS499-1Supplement-1992
【标准状态】:现行
【国别】:英国
【发布日期】:1992-12-15
【实施或试行日期】:1992-12-15
【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】:焊接;电阻焊接;焊接设备;词汇;电焊;电弧焊接设备;电弧焊接
【英文主题词】:Definitions;Electricwelding;Electricalengineering;Englishlanguage;Germanlanguage;Multilingual;Terminology;Vocabulary;Welding;Weldingequipment
【摘要】:Givesdefinitionsforelectricalandthermalcharacteristicsofweldingequipment,forweldingpowersources,accessoriesandconsumablesandforsafetyequipment.
【中国标准分类号】:J33
【国际标准分类号】:01_040_25;01_040_29;25_160_10;29_020
【页数】:36P.;A4
【正文语种】:英语


【英文标准名称】:Informationtechnology-Datainterchangeon120mmand80mmopticaldiskusing+RWformat-Capacity:4,7Gbytesand1,46Gbytesperside(recordingspeedupto4X)
【原文标准名称】:信息技术.用+RW格式120mm和80mm光盘的数据交换.容量:每面4.7Gbytes和1.46Gbytes(刻录速度小于4X)
【标准号】:ANSI/INCITS/ISO/IEC17341-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:数据交换;数据格式;数据介质;数据处理;定义(术语);电子数据处理(EDP);信息交换;信息处理;信息技术;机械性能;光盘;光学特性;物理性能;特性;信号;规范(验收);储存媒介;存储目标;测试
【英文主题词】:Dataexchange;Dataformats;Datamedia;Dataprocessing;Definitions;EDP;Informationinterchange;Informationprocessing;Informationtechnology;Mechanicalproperties;Opticaldisks;Opticalproperties;Physicalproperties;Properties;Signals;Specification(approval);Storagemedia;Storagetarget;Testing
【摘要】:ISO/IEC17341:2009specifiesthemechanical,physicalandopticalcharacteristicsof120mmrewritableopticaldiskswithcapacitiesof4,7Gbytesand9,4Gbytes.Itspecifiesthequalityoftherecordedandunrecordedsignals,theformatofthedataandtherecordingmethod,therebyallowingforinformationinterchangebymeansofsuchdisks.Thedatacanbewritten,readandoverwrittenmanytimesusingthephasechangemethod.Thesedisksareidentifiedas+RW.
【中国标准分类号】:L64
【国际标准分类号】:35_220_30
【页数】:
【正文语种】:英语