NF L22-573-1978 镀镉25CD4S钢制深槽90°角内锁紧系留螺母.小型系列.ISO螺纹
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来源:标准资料网
【英文标准名称】:SELF-LOCKINGANCHORNUTS,90DEGREESANGLE,MINIATURESERIES,DEEPCOUNTERBOREINCADMIUM-PLATED25CD4SSTEEL.ISOTHREAD.
【原文标准名称】:镀镉25CD4S钢制深槽90°角内锁紧系留螺母.小型系列.ISO螺纹
【标准号】:NFL22-573-1978
【标准状态】:作废
【国别】:法国
【发布日期】:1978-07
【实施或试行日期】:1978-07-01
【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】:作标记;埋头孔螺母;系紧螺母;ISO微型螺纹;ISO米制螺纹;螺母;名称与符号;自锁紧螺母;设备规范;产品规范;飞行器设备;防松螺母;材料规范;尺寸公差;飞行器部件;尺寸;小螺纹
【英文主题词】:
【摘要】:
【中国标准分类号】:V20
【国际标准分类号】:49_030_30
【页数】:3P;A4
【正文语种】:其他
【英文标准名称】:Implantsforosteosynthesis.Skeletalpinsandwires.SpecificationfordimensionsofSteinmannskeletalpins
【原文标准名称】:骨接合术用外科植入物.第6部分:骨骼用钉和金属丝.第2节:斯坦曼骨骼钉尺寸规范
【标准号】:BS3531Sec.6.2-1991
【标准状态】:作废
【国别】:英国
【发布日期】:1991-09-30
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:矫形外科学;销钉;外科植入物;钉子;外科设备;角;尺寸;肌肉骨骼系统;圆铁钉;作标记;设计;外科学;医疗设备
【英文主题词】:orthopaedics;design;nails;surgery;wirenails;pins(nails);angles(geometry);marking;implants(surgical);surgicalequipment;medicalequipment;dimensions;musculoskeletalsystem
【摘要】:
【中国标准分类号】:C35
【国际标准分类号】:
【页数】:8P;A4
【正文语种】:英语
【英文标准名称】:StandardGuideforRepresentativeSamplingforManagementofWasteandContaminatedMedia
【原文标准名称】:废物和污染媒介管理用代表性取样的标准指南
【标准号】:ASTMD6044-1996(2003)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:D34.01.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:bias;contaminatedmedia;precision;representative;sample;waste;wastemanagement
【摘要】:Representativesamplesaredefinedinthecontextofthestudyobjectives.Thisguidedefinesthemeaningofarepresentativesample,aswellastheattributesthesample(s)needstohaveinordertoprovideavalidinferencefromthesampledatatothepopulation.Thisguidealsoprovidesaprocesstoidentifythesourcesoferror(bothsystematicandrandom)sothataneffortcanbemadetocontrolorminimizetheseerrors.Thesesourcesincludesamplingerror,measurementerror,andstatisticalbias.Whentheobjectiveislimitedtothetakingofarepresentative(physical)sampleorarepresentativesetof(physical)samples,onlypotentialsamplingerrorsneedtobeconsidered.Whentheobjectiveistomakeaninferencefromthesampledatatothepopulation,additionalmeasurementerrorandstatisticalbiasneedtobeconsidered.Thisguidedoesnotapplytothecaseswherethetakingofanonrepresentativesample(s)isprescribedbythestudyobjective.Inthatcase,samplingapproachessuchasjudgmentsamplingorbiasedsamplingcanbetaken.Theseapproachesarenotwithinthescopeofthisguide.Followingthisguidedoesnotguaranteethatrepresentativesampleswillbeobtained.Butfailuretofollowthisguidewilllikelyresultinobtainingsampledatathatareeitherbiasedorimprecise,orboth.Followingthisguideshouldincreasethelevelofconfidenceinmakingtheinferencefromthesampledatatothepopulation.ThisguidecanbeusedinconjunctionwiththeDQOprocess(seePracticeD5792).Thisguideisintendedforthosewhomanage,design,andimplementsamplingandanalyticalplansforwastemanagementandcontaminatedmedia.1.1Thisguidecoversthedefinitionofrepresentativenessinenvironmentalsampling,identifiessourcesthatcanaffectrepresentativeness(especiallybias),anddescribestheattributesthatarepresentativesampleorarepresentativesetofsamplesshouldpossess.Forconvenience,theterm"representativesample"isusedinthisguidetodenotebotharepresentativesampleandarepresentativesetofsamples,unlessotherwisequalifiedinthetext.1.2Thisguideoutlinesaprocessbywhicharepresentativesamplemaybeobtainedfromapopulation.Thepurposeoftherepresentativesampleistoprovideinformationaboutastatisticalparameter(s)(suchasmean)ofthepopulationregardingsomecharacteristic(s)(suchasconcentration)ofitsconstituent(s)(suchaslead).Thisprocessincludesthefollowingstages:(1)minimizationofsamplingbiasandoptimizationofprecisionwhiletakingthephysicalsamples,(2)minimizationofmeasurementbiasandoptimizationofprecisionwhenanalyzingthephysicalsamplestoobtaindata,and(3)minimizationofstatisticalbiaswhenmakinginferencefromthesampledatatothepopulation.Whilebothbiasandprecisionarecoveredinthisguide,majoremphasisisgiventobiasreduction.1.3Thisguidedescribestheattributesofarepresentativesampleandpresentsageneralmethodologyforobtainingrepresentativesamples.Itdoesnot,however,providespecificorcomprehensivesamplingprocedures.Itistheuser'sresponsibilitytoensurethatproperandadequateproceduresareused.1.4Theassessmentoftherepresentativenessofasampleisnotcoveredinthisguidesinceitisnotpossibletoeverknowthetruevalueofthepoplulation.1.5Sincethepurposeofeachsamplingeventisunique,thisguidedoesnotattempttogiveastepbystepaccountofhowtodevelopasamplingdesignthatresultsinthecollectionofrepresentativesamples.1.6AppendixX1containstwocasestudies,whichdiscussthefactorsforobtainingrepresentativesamples.1.7Thisstandarddoesnotpurporttoaddr......
【中国标准分类号】:Z04
【国际标准分类号】:13_020_10
【页数】:11P.;A4
【正文语种】:
