NF L54-110-026-2011 航天系列矩形模块式电连接器(连续工作温度175℃).第026部分:单一模块配件.产品标准.

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【英文标准名称】:Aerospaceseries-Connectors,electrical,rectangular,modular-Operatingtemperature175oCcontinuous-Part026:accessoriesforsinglemodules-Productstandard.
【原文标准名称】:航天系列矩形模块式电连接器(连续工作温度175℃).第026部分:单一模块配件.产品标准.
【标准号】:NFL54-110-026-2011
【标准状态】:现行
【国别】:法国
【发布日期】:2011-09-01
【实施或试行日期】:2011-09-24
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Aerospacetransport;Airtransport;Aircraftcomponents;Continuousoperation;Deliveryconditions;Design;Electricconnectors;Electricplugs;Electrical;Electricalengineering;Enclosures;Inspection;Operatingtemperatures;Packages;Plugs;Productstandards;Properties;Qualityassurance;Qualitycontrol;Rectangularconnectors;Spacetransport;Specification(approval);Terminalcasings;Testing;Types
【摘要】:
【中国标准分类号】:V25
【国际标准分类号】:49_060
【页数】:23P;A4
【正文语种】:其他


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基本信息
标准名称:机床夹具零件及部件 可调支座
英文名称:The parts and units of jigs and fixtures--Adjustable pedestal
中标分类: 机械 >> 加工工艺 >> 焊接与切割
替代情况:JB 3407-1983;调整为JB/T 8036.2-1999
发布日期:1900-01-01
实施日期:1992-01-01
首发日期:1900-01-01
作废日期:2000-01-01
出版日期:1900-01-01
页数:4页
适用范围

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前言

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引用标准

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所属分类: 机械 加工工艺 焊接与切割
【英文标准名称】:StandardPracticeforDeterminingContrastSensitivityinRadioscopy
【原文标准名称】:射线检查法中对比灵敏度测定的标准实施规范
【标准号】:ASTME1647-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E07.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:图像质量;图像质量指示器;直线;γ辐射;射线检查;放射性照射;辐照;试验
【英文主题词】:contrastsensitivitygage;gammaray;imageformation;imageprocessing;imagequalityindicator;line-pairspermillimeter;penetratingradiation;spatialresolution;X-ray
【摘要】:Thecontrastsensitivitygagemeasurescontrastsensitivityindependentoftheimagingsystemspatialresolutionlimitations.Thethicknessrecessdimensionsofthecontrastsensitivitygagearelargewithrespecttothespatialresolutionlimitationsofmostimagingsystems.Fourlevelsofcontrastsensitivityaremeasured:4%,3%,2%,and1%.Thecontrastsensitivitygageisintendedforuseinconjunctionwithahigh-contrastresolutionmeasuringgage,suchastheEN462x2013;5DuplexWireImageQualityIndicator.Suchgagesmeasurespatialresolutionessentiallyindependentoftheimagingsystem’contrastsensitivity.Suchmeasurementsareappropriateforthequalificationandperformancemonitoringofradiographicandradioscopicimagingsystems.Radioscopic/radiographicsystemperformancemaybespecifiedbycombiningthemeasuredcontrastsensitivityexpressedasapercentagewiththespatialresolutionexpressedinmillimetersofunsharpness.FortheEN462x2013;5spatialresolutiongage,theunsharpnessisequaltotwicethewirediameter.Forthelinepairgage,theunsharpnessisequaltothereciprocaloftheline-pair/mmvalue.Asanexample,animagingsystemthatexhibits2%contrastsensitivityandimagesthe0.1mmEN462x2013;5pairedwires(equivalenttoimaging5line-pairs/millimeterresolutiononaline-pairgage)performsata2%x2013;0.2mmsensitivitylevel.AstandardmethodofevaluatingoverallradioscopicsystemperformanceisgiveninPracticeE1411andinEN13068x2013;1.1.1Thispracticecoversthedesignandmaterialselectionofacontrastsensitivitymeasuringgageusedtodeterminetheminimumchangeinmaterialthicknessordensitythatmaybeimagedwithoutregardtospatialresolutionlimitations.1.2Thispracticeisapplicabletotransmitted-beamradiographicandradioscopicimagingsystemsutilizingX-rayandgammarayradiationsources.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificsafetystatements,seeNIST/ANSIHandbook114Section8,CodeofFederalRegulations21CFR1020.40and29CFR1910.96.
【中国标准分类号】:C43
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】: