SJ 50973/5-1996 SFT-50-1-51型50Ω、直径0.86mm半硬射频同轴电缆详细规范
作者:标准资料网 时间:2024-05-08 03:12:36 浏览:8869
来源:标准资料网
基本信息
| 标准名称： | SFT-50-1-51型50Ω、直径0.86mm半硬射频同轴电缆详细规范 |
| 英文名称： | Cable, radio frequency, coaxial, semirigid, 0.86㎜ diameter, 50Ω，type SFT-50-1-51,detail specification for |
| 中标分类： |
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| 发布日期： | 1996-08-30 |
| 实施日期： | 1997-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 10页 |
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所属分类：
【英文标准名称】:GuidefortheEvaluationofFireRiskAssessments
【原文标准名称】:火灾风险评估的评估指南
【标准号】:ANSI/NFPA551-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:评估;火灾危险;危险分析
【英文主题词】:Assessment;Evaluation;Firerisks;Riskanalysis
【摘要】:1.1Scope.Thisguideisintendedtoprovideassistance,primarilytoauthoritieshavingjurisdiction(AHJs),inevaluatingtheappropriatenessandexecutionofafireriskassessment(FRA)foragivenfiresafetyproblem.Whilethisguideprimarilyaddressesregulatoryofficials,italsoisintendedforotherswhoreviewFRAs,suchasinsurancecompanyrepresentativesandbuildingowners.
【中国标准分类号】:C80
【国际标准分类号】:13_220_01
【页数】:
【正文语种】:英语
【英文标准名称】:Gasanalysis-Preparationofcalibrationgasmixtures-Staticvolumetricmethod
【原文标准名称】:气体分析.标定用混合气体的制备.静态容量法
【标准号】:ISO6144-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-02
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC158
【标准类型】:()
【标准水平】:()
【中文主题词】:标定气体;生产;检验设备;气体;混合气体;静态的;试验气体;容量分析;气体分析;校正;容量的
【英文主题词】:Analysis;Calibration;Calibrationgases;Chemicalanalysisandtesting;Controlsamples;Gasanalysis;Gasmixtures;Gases;Inspectionequipment;Materialstesting;Mathematicalcalculations;Measurement;Methods;Production;Static;Testgases;Volume;Volumetric;Volumetricanalysis
【摘要】:ThisInternationalStandardspecifiesamethodforthepreparationofcalibrationgasmixturesbyastaticvolumetricmethodandprovidesaprocedureforcalculatingthevolumetriccompositionofthemixture,ftcanbeusedeitherwithbinarygasmixtures(containingonecalibrationcomponentinacomplementarygas,whichisusuallynitrogenorair)orwithmixturescontainingmorethanonecomponentinthecomplementarygas.ThisInternationalStandardalsospecifieshowtheexpandeduncertaintyinthevolumefractionOfeachcalibrationcomponentinthemixtureisdeterminedbyarigorousevaluationofallthemeasurementuncertaintiesinvolved,includingthoseassociatedwiththeapparatususedforthepreparationofthegasmixtureandthoseassociatedwiththeexperimentalprocedureitself.NOTE1ThisInternationalStandardisgenerallyapplicabletothepreparationofcalibrationgasmixturescontainingcalibrationcomponentsintheconcentrationrange10×10(10ppb—partsperbillion)to50×10(50ppm—partspermillion)byvolume.However,gasmixturesmaybepreparedatlargerorsmallervolumefractions,providedthatthecomponentsusedinthestaticdilutionprocessareselectedappropriately.NOTE2Arelativeexpandeduncertaintyofnotgreaterthan±1%atalevelofconfidenceof95%maybeachievableattheseconcentrations,providedthat:—thepuritiesoftheparentgaseshavebeendeterminedbyanalysisandanysignificantimpuritiesandtheuncertaintiesintheirmeasuredconcentrationshavebeentakenintoaccount;—nosignificantadsorptioneffectsorchemicalreactionsoccurbetweenthegaseousconstituentsandtheinternalsurfacesoftheapparatus,andtherearenoreactionsbetweenanyofthegaseouscomponents,i.e.betweenthecalibrationcomponentandcomplementarygasorbetweenthecalibrationcomponentsthemselves;—alltherelevantapparatususedinthepreparationofacalibrationgasmixturehavebeencalibratedwithassignedmeasurementuncertaintieswhichareappropriatetocalculatingthefinalexpandeduncertaintyforthecalibrationgasmixtureprepared.
【中国标准分类号】:G85
【国际标准分类号】:71_040_40
【页数】:29P;A4
【正文语种】:英语
