ASTM F 2281-2004 耐热及高温设备用不锈钢和镍合金螺栓、六角头螺钉和螺柱的标准规范

上一篇: ASTM F 2431-2004 内部环状轴承的标准规范:带厚外环的滚针轴承
下一篇: ASTM F 2443-2004 球端、实心、针式铁类滚柱轴承的标准规范

【英文标准名称】:Tyresforpassengercars-Part8:Radialtyres"65"serie
【原文标准名称】:轿车轮胎.第8部分:径向轮胎"65"系列
【标准号】:DIN7803-8-2000
【标准状态】:作废
【国别】:德国
【发布日期】:2000-03
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:私人汽车;受牵引车辆;大气压;充气轮胎;使用说明;操作说明书;最大速度;径向帘布轮胎;轮辋;速度;轮胎;安装细则;荷载能力;公差(测量);尺寸;特性;运载工具部件;载荷能力;摩托车;轮胎充气压力;轮胎尺寸
【英文主题词】:
【摘要】:
【中国标准分类号】:G41
【国际标准分类号】:83_160_10
【页数】:8P;A4
【正文语种】:德语


【英文标准名称】:StandardPracticeforQCMMeasurementofSpacecraftMolecularContaminationinSpace
【原文标准名称】:对太空中航天器分子污染进行QCM测量的标准实施规程
【标准号】:ASTME2311-2004(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【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】:E21.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:contaminationmeasurement;molecularcontamination;outgassing;outgassingrates;quartzcrystalmicrobalance;spacecraftcontamination;temperaturecontrolledquartzcrystalmicrobalance;Molecularcontaminant;Quartzcrystalmicrobalances(QCM)
【摘要】:Spacecrafthaveconsistentlyhadtheproblemofcontaminationofthermalcontrolsurfacesfromline-of-sightwarmsurfacesonthevehicle,outgassingofmaterialsandsubsequentcondensationoncriticalsurfaces,suchassolararrays,movingmechanicalassemblies,cryogenicinsulationschemes,andelectricalcontacts,controljeteffects,andotherformsofexpellingmoleculesinavaporstream.Tothishasbeenaddedtheneedtoprotectopticalcomponents,eitheratambientorcryogenictemperatures,fromtheminutestdepositionofcontaminantsbecauseoftheirabsorptance,reflectanceorscatteringcharacteristics.Muchprogresshasbeenaccomplishedinthisarea,suchasthecarefultestingofeachmaterialforoutgassingcharacteristicsbeforethematerialisusedonthespacecraft(followingTestMethodsE595andE1559),butmeasurementandcontrolofcriticalsurfacesduringspaceflightstillcanaidinthedeterminationoflocationandbehaviorofoutgassingmaterials.1.1Thispracticeprovidesguidanceformakingdecisionsconcerningtheuseofaquartzcrystalmicrobalance(QCM)andathermoelectricallycooledquartzcrystalmicrobalance(TQCM)inspacewherecontaminationproblemsonspacecraftarelikelytoexist.Carefuladherencetothisdocumentshouldensureadequatemeasurementofcondensationofmolecularconstituentsthatarecommonlytermedx201C;contaminationx201D;onspacecraftsurfaces.1.2Acorollarypurposeistoprovidechoicesamongtheflight-qualifiedQCMsnowexistingtomeetspecificneeds.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z04
【国际标准分类号】:71_040_99
【页数】:22P.;A4
【正文语种】:英语