【英文标准名称】:StandardTestMethodforMicronaireReadingofCottonFibers
【原文标准名称】:棉纤维的马克隆尼读数的标准试验方法
【标准号】:ASTMD1448-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D13.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;棉花;纺织纤维;纺织材料
【英文主题词】:cotton;fineness;micronairereading
【摘要】:Thistestmethodfordeterminingmicronairereadingofcottonfibersisconsideredsatisfactoryforacceptancetestingofcommercialshipmentswhenthelevelsarecontrolledbyuseofafullrangeofcalibrationcottonstandards.5.1.1Incaseofadisputearisingfromdifferencesinreportedtestresultswhenusingthistestmethodforacceptancetestingofcommercialshipments,thepurchaserandthesuppliershouldconductcomparativeteststodetermineifthereisastatisticalbiasbetweentheirlaboratories.Competentstatisticalassistanceisrecommendedfortheinvestigationofbias.Asaminimum,thetwopartiesshouldtakeagroupoftestspecimensthatareashomogeneousaspossibleandthatarefromalotofmaterialofthetypeinquestion.Thetestspecimensshouldthenberandomlyassignedinequalnumberstoeachlaboratoryfortesting.TheaverageresultsfromthetwolaboratoriesshouldbecomparedusingStudentrsquo;t-testforunpaireddataandanacceptableprobabilitylevelchosenbythetwopartiesbeforethetestingisbegun.Ifabiasisfound,eitheritscausemustbefoundandcorrectedorthepurchaserandthesuppliermustagreetointerpretfuturetestresultsinthelightoftheknownbias.Themicronairereadingofcottonfibersisafunctionofbothfinenessandmaturityandisrelatedtomillprocessingperformanceandtothequalityoftheendproducts.Factorscorrelatedwithmicronairereadingincludecleaningefficiency,neppiness,andthestrengthanduniformityoftheyarn.Note28212;Amodificationofthistestmethodisusedincommercialtradingtoselectbaleswhichwillconformtocontractguaranteesforspecifiedmicronairereadings.Forthispurpose,itisusualpracticetotestonlyonespecimenpersample.1.1Thistestmethodcoversthedeterminationofthemicronairereadingofloosecottonfibersbymeasuringtheresistanceofaplugofcottonfiberstoairflowunderprescribedconditions.Note1Forothermethodsfordeterminingthefinenessoffibersbasedontheair-flowprinciple,refertoTestMethodD1449,TestMethodforSpecificAreaandImmaturityRatioofCottonFibers(ArealometerMethod),andtoTestMethodD1282,TestMethodforResistancetoAirFlowasanIndicationofAverageFiberDiameterofWoolTop,CardSliver,andScouredWool.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W10
【国际标准分类号】:59_060_10
【页数】:3P.;A4
【正文语种】:


【英文标准名称】:Ceramicpressurizedinsulatorsforhigh-voltageswitchgearandcontrolgear.
【原文标准名称】:高压开关装置和开关设备用陶瓷增压绝缘子
【标准号】:NFC64-464-2000
【标准状态】:作废
【国别】:法国
【发布日期】:2000-09-01
【实施或试行日期】:2000-09-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:开关设备;空心绝缘子;电气工程;高压开关设备;绝缘子;陶瓷绝缘子;高压电器;电控制设备
【英文主题词】:
【摘要】:
【中国标准分类号】:K43
【国际标准分类号】:29_080_10
【页数】:27P;A4
【正文语种】:其他