ISO 6142-2001 气体分析标定用混合气体的制备称重法

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【英文标准名称】:Gasanalysis-Preparationofcalibrationgasmixtures-Gravimetricmethod
【原文标准名称】:气体分析标定用混合气体的制备称重法
【标准号】:ISO6142-2001
【标准状态】:现行
【国别】:国际
【发布日期】:2001-04
【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】:混合气体;称重;称重方法;称重分析;试验气体;气体分析;检验设备;生产;校正;重量测量;重量;气体;测量;重量分析
【英文主题词】:Analysis;Calibration;Calibrationgases;Chemicalanalysisandtesting;Chemicalcomposition;Comparativetests;Comparisonanalysis;Comparisonmethods;Composition;Concentration(chemical);Dataanalysis;Definitions;Determination;Determinationofcontent;Electricalengineering;Examination(qualityassurance);Gasanalysis;Gasmixtures;Gases;Gravimetricanalysis;Inspectionequipment;Materialstesting;Measurement;Methodsofanalysis;Ponderalanalysis;Production;Testgases;Testing;Testingconditions;Weighing;Weighingmethods;Weightmeasurement;Weights
【摘要】:ThisInternationalStandardspecifiesagravimetricmethodforthepreparationofcalibrationgasmixturesincylindersofwhichthetargetaccuracyofthecompositionhasbeenpre-defined.Itisapplicableonlytomixturesofgaseousortotallyvaporizedcomponentswhichdonotreactwitheachotherorwiththecylinderwalls.Aprocedureisgivenforamethodofpreparationbasedonrequirementsforthefinalgasmixturecompositiontobewithinpre-setlevelsofuncertainty.Multi-componentgasmixtures(includingnaturalgas)andmultipledilutionmixturesareincludedinthisInternationalStandardandareconsideredtobespecialcasesofthesinglecomponentgravimetricpreparationmethod.ThisInternationalStandardalsodescribestheprocedureforverifyingthecompositionofgravimetricallypreparedcalibrationgases.Providedrigorousandcomprehensivequalityassuranceandqualitycontrolproceduresareadoptedduringthepreparationandvalidationofthesegravimetricgasmixtures,calibrationgasesofthehighestaccuracycanbeobtainedforawiderangeofgasmixtures,incomparisonwithothermethodsofpreparingsuchgases.
【中国标准分类号】:A43
【国际标准分类号】:71_040_40
【页数】:37P;A4
【正文语种】:英语

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【英文标准名称】:Informationtechnology-Officeequipment-Measurementofimagequalityattributesforhardcopyoutput;Binarymonochrometextandgraphicimages
【原文标准名称】:信息技术办公设备硬拷贝输出图象质量属性的测量二进制单色文本和图象
【标准号】:ISO/IEC13660-2001
【标准状态】:现行
【国别】:国际
【发布日期】:2001-09
【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/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:数据处理;定义;工作特性;打印质量;单色;图像处理;打印机;正文;信息技术;图象质量;图形表示;测量技术;办公机器;测量
【英文主题词】:Dataprocessing;Definitions;Graphicrepresentation;Imageprocessing;Imagequality;Informationtechnology;Measurement;Measuringtechniques;Monochrom;Officemachines;Performancecharacteristics;Printers;Printingquality;Text
【摘要】:ThisInternationalStandardspecifiesdevice-independentimagequalityattributes,measurementmethods,andanalyticalprocedurestodescribethequalityofoutputimagesfromhardcopydevices.ThisInternationalStandardisapplicabletohuman-readabledocumentscomposedofbinarymonochromeimagesproducedfromimpactprinters,non-impactprinters,andcopiers.Theattributes,methods,andproceduresrelyonintrinsicpropertiesoftheimage.Targetsorreferenceimagesarenotrequired.TheInternationalStandardisnotapplicabletoimagesonmediaotherthanhardcopy(e.g.imagesonaVDT)ortoimagesthatareintendedtobemachinereadableonly(e.g.barcodes).ThisInternationalStandardisnotintendedtoapplytopictorialart.Itisoptimizedforblackcolourantformingtheimageonawhitesubstrate;itisnotintendedtobeusedfordroppedoutorreversedtypeorfortransparencies.Theevaluationofanimagewithanyothercolourofcolourantorsubstratewillbesensitivetochangesinillumination.Inthiscase,theproceduresofthisInternationalStandardmaynotbeapplicableandshouldbeusedwithcaution.
【中国标准分类号】:L81
【国际标准分类号】:35_180;37_100_10
【页数】:27P;A4
【正文语种】:英语

MIL-H-81735A (AMENDMENT 1), MILITARY SPECIFICATION: HELMETS, FLIGHT DECK CREWMAN'S, IMPACT RESISTANT (09 AUG 1985)., This specification covers the requirements for impact resistant flight deck crewman's helmets and components (see 6.2 b).