NF Z84-843-2-2004 电磁兼容性和无线电频谱情况(ERM).无线电设备和辅助设备的电磁兼容性标准.第2部分:VHF无线电话发射机和接收机的特殊条件
时间:2024-05-21 02:25:02 来源: 标准资料网 作者：标准资料网 阅读：8847
【英文标准名称】:ElectromagneticcompatibilityandRadiospectrumMatters(ERM)-ElectroMagneticCompatibility(EMC)standardformarineradioequipmentandservices-Part2:specificconditionsforVHFradiotelephonetransmittersandreceivers(V1.2.1).
【原文标准名称】:电磁兼容性和无线电频谱情况(ERM).无线电设备和辅助设备的电磁兼容性标准.第2部分:VHF无线电话发射机和接收机的特殊条件
【标准号】:NFZ84-843-2-2004
【标准状态】:现行
【国别】:法国
【发布日期】:2004-10-01
【实施或试行日期】:2004-10-20
【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】:Communicationtechnology;Electromagneticcompatibility;EMC;Emission;ETSI;Informationprocessing;Interferingemissions;Marineradio;Radiosystems;Radiotelephones;Receivers;Regulations;Telecommunication;Telecommunicationnetworks;Telecommunicationsystems;Telecommunications;Telephonenetworks;Transmitters;VHF;Watertransport
【摘要】:
【中国标准分类号】:L06
【国际标准分类号】:33_100_01;33_100_10
【页数】:14P.;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforMedandKempFibersinWoolandOtherAnimalFibersbyMicroprojection
【原文标准名称】:用显微投影法测定羊毛和其它动物纤维中的有髓纤维和死毛纤维的标准试验方法
【标准号】:ASTMD2968-1995(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1995
【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】:D13.13
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:animalfibers(exceptwool);microscopicalexamination;wool;Animalfibers;Kempfibercontent;Med(medullated)fibercontent;Microprojection;Woolandwooltop
【摘要】:TestMethodD2968forthedeterminationofmedandkempfibersbymicroprojectionmaybeusedfortheacceptancetestingofcommercialshipmentsofwoolandotheranimalfibers,butcautionisadvisedsinceonlyafewtypesofanimalfibershavebeensubjectedtointerlaboratoryteststoascertaintheprecisionoftestsformedandkempfibersbythistestmethod.Comparativetestsasdirectedin5.1.1maybeadvisable.IncaseofadisputearisingfromdifferencesinreportedtestresultswhenusingTestMethodD2968foracceptancetestingofcommercialshipments,thepurchaserandthesuppliershouldconductcomparativeteststodetermineifthereisastatisticalbiasbetweentheirlaboratories.Competentstatisticalassistanceisrecommendedfortheinvestigationofbias.Asaminimum,thetwopartiesshouldtakeagroupoftestspecimenswhichareashomogeneousaspossibleandwhicharefromalotofmaterialofthetypeinquestion.Thetestspecimensshouldthenberandomlyassignedinequalnumberstoeachlaboratoryfortesting.TheaverageresultsfromthetwolaboratoriesshouldbecomparedusingStudent''st-testforunpaireddataandanacceptableprobabilitylevelchosenbythetwopartiesbeforetestingisbegun.Ifabiasisfound,eitheritscausemustbefoundandcorrected,orthepurchaserandthesuppliermustagreetointerpretfuturetestresultsinviewoftheknownbias.Knowledgeoftheincidenceofmedfibersandkempfibersinwoolandotheranimalfibersisofimportancetomanufacturersofwovenorknittedfabricsbecauseoftheapparentdyeresistanceandlightreflectancequalitiesofthesefibers.Thisisnottoimplythatallkempfiberswillresistdyeandallmedfiberswillacceptdyenormally.Inpractice,aproportionofkempfiberswillappearnormalafterdyeingandaproportionofmedfiberswillappearchalkywhiteafterdyeing.Fromtheperspectiveofvisualandaestheticproblems,medullatedfibershavinganabnormallylargediameterandahighdegreeofmedullationareprobablytheworstkind.Note8212;Thecontrastbetweenthesolidandthehollowportionsofthemedullatedfibersissignificantlyreducedwhenthemedullabecomesfilledwithmountingmedium.FIG.1TypesofMedullainWoolandMohairFibers1.1Thistestmethodcoversthedeterminationbymicroprojectionofthepercentageofmedullatedfibers(medandkempfibers)inwoolorotheranimalfiberssuchasmohair,cashmere,alpaca,orcamel''shairintheirvariousforms.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W20
【国际标准分类号】:59_060_10
【页数】:3P.;A4
【正文语种】:英语