NF C93-843-1996 系列规范.单模弥散移动光纤电缆(B2型)
作者:标准资料网 时间:2024-05-02 20:55:01 浏览:9222
来源:标准资料网
【英文标准名称】:Familyspecification.Single-modedispersionshifted(B2)opticalfibre.
【原文标准名称】:系列规范.单模弥散移动光纤电缆(B2型)
【标准号】:NFC93-843-1996
【标准状态】:作废
【国别】:法国
【发布日期】:1996-01-01
【实施或试行日期】:1996-01-20
【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】:纤维;光波导;类规范;光学纤维;电子设备及元件;电气工程;质量
【英文主题词】:fibres;opticalfibres;electricalengineering;opticalwaveguides;electronicequipmentandcomponents;familyspecification;quality
【摘要】:
【中国标准分类号】:M33
【国际标准分类号】:33_180_10
【页数】:6P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforDeterminingMoistureinRawandSpentMaterials
【原文标准名称】:原材料和用过的材料中测定潮气的标准试验方法
【标准号】:ASTMD6403-1999(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【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】:D31.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:moisture;tanninanalysis;vegetabletanninanalysis;volatilematter;Leather;Moistureanalysis--leather;Raw/spentleathermaterials;Spentmaterials;Tanninganalysis/materials;Vegetable-tannedleather
【摘要】:Thistestmethodisusedtodeterminethemoisturecontentofmaterials(raworspent)thataretobeextractedfortanninanalysis.Thevalueobtainedformoisturecontentbythistestmethodisusedtocalculatetheresultsoftheotheranalysesonthismaterialtoamoisture-freebasis.ThespecimensareobtainedfromthematerialpreparedforextractioninPracticeD6405.Tanningmaterialscontainmoistureinvaryingamounts,dependingbothonthenatureofthematerialandontheclimaticconditions,thereforesamplingmustbecarriedoutasquicklyasisconsistentwiththoroughnessinordertoavoidchangesinmoisturecontent.Negativeerrorsmayoccurinthemoisturedeterminationbecauseundertheconditionsofthismethodtheremayberetentionofmoisturebycertaincomponents(forexample,hydratedsaltsorwaterboundtoorganicstructures)oftheraworspentmaterialorbecauseofoxidationofothercomponents(forexample,tannins)oftheraworspentmaterial.Positiveerrorsmayoccurinthemoisturedeterminationbecauseundertheconditionsofthistestmethodtheremaybevolatilizationofcertaincomponentsoftheraworspentmaterialotherthanwater.Itisknownthatotherfactorscanalsoaffectthequantityofvolatilematter(moisture)releasedbythespecimen.Thesefactorsincludebutarenotlimitedto:particlesizeofthetestspecimen,quantityoftestspecimen,oventemperature,exposuretimeintheoven,shapeofthespecimencontainer,andtypeofoven(forexample,gravityormechanicalconvection)used.Becauseofthepossibilityofunknownerrorsinthistestmethoditisessentialthatthemethodbefollowedexactlyinordertoobtainreproducibleresultsbothamongspecimenswithinalaboratoryandforanalysesbetweenlaboratories.1.1Thistestmethodisintendedforuseindeterminingthemoisturecontentinrawandspentmaterialsthatareextractedfortanninanalysis.Themoisturecontentofthesampleisoperationallydefinedtobeequaltotheweightlossexperiencedasaresultoftheevaporationwhichoccursinthedryingoven.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B72
【国际标准分类号】:59_140_10
【页数】:3P.;A4
【正文语种】:英语
