MIL-A-55339A (SUPPLEMENT 1)
作者:标准资料网 时间:2024-05-23 09:44:48 浏览:9908
来源:标准资料网
下载地址: 点击此处下载
MIL-A-55339A (SUPPLEMENT 1), PERFORMANCE SPECIFICATION, ADAPTERS, CONNECTORS, COAXIAL, RADIO FREQUENCY, (BETWEEN SERIES AND WITHIN SERIES), GENERAL SPECIFICATION FOR (20 JUL 1982) [S/S BY MIL-PRF-55339B]., This supplement forms a part of Military Specification MIL-A-55339, dated 1 July 1971.
下载地址: 点击此处下载
【英文标准名称】:StandardPracticeforPreparingCoalSamplesforAnalysis
【原文标准名称】:分析用煤样品的标准制备方法
【标准号】:ASTMD2013/D2013M-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D05.23
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:煤
【英文主题词】:coal;composite;division;reduction;Coalsamplingsystems
【摘要】:Otherstandardsareusedtocollectthegrosssample:PracticeD2234/D2234Mallowsforonedivisionofthegrosssamplebeforecrushing.Themassandtopsizeofthegrossordividedsamplecollectedbyusingtheseguidesandpracticesareusuallytoolargeforchemicalorphysicaltesting.PracticeD2013provideinstructionsforreducinganddividingthegrossordividedsample,byon-lineoroff-lineprocesses,orboth,toatopsizeandmasssuitabletotheperformanceoftesting.Anybiasinthegrossordividedsamplebeforeadherencetothispracticewillremaininthefinalsampleresultingfromuseofthispractice.Therefore,carefullyselectthestandardtobeusedtocollectthegrosssample.Divisionandreductionofasamplemayoccuratmorethanonelocation.Mostoften,thesampleiscollected,reduced,anddivided(oneormoretimes)byuseofamechanicalsamplingsystem.Theremainingsamplemaybefurtherdividedon-sitetofacilitatetransportingittothelaboratorywherefurtherreductionanddivisionlikelyoccursbeforeanalysis.Inplaces,thispracticerequiresairdryingthesamplebeforesubsequentreduction.Proceduresforairdryingandair-drylossdeterminationareprovidedinTestMethodD3302.Mostoften,samplesarereducedanddividedtoananalysissample.However,sometestsmayrequireasampleofdifferentmassortopsize.Thisproceduremaybeusedtoprovideasampleofanymassandsizeconsistfromthegrossordividedsampleto,andincluding,theanalysissample.Thispracticealsospecifieshowtopreparecompositesamples,ifrequired.1.1Thispracticecoversthereductionanddivisionofgrossordividedsamples,andthepreparationofcompositesamples,uptoandincludingtheindividualportionsforlaboratoryanalysis.1.2Reductionanddivisionproceduresareprescribedforcoalsofthefollowinggroups:1.2.1GroupAincludescoalsthathavebeencleanedinallsizes.1.2.2GroupBincludesallothercoals.UnknowncoalsaretobeconsideredunderGroupB.1.2.3GroupAallowssmallerweightlaboratorysamplestoberetainedthanGroupB.Theselowerweightsmaybeusedforparticularcoalsiftheyhavebeenshown,byusingtheproceduresofAnnexA1.2,togiveasamplepreparationandanalysisvariancewhichisnomorethan20%ofthetotalanalysisvariance.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareprovidedforinformationpurposesonly.A1.1.1Thismethodcoversproceduresforcheckingprecisionofsamplepreparationandanalysisofthevariousstages.Thedataobtainedfromtestsusingconsistentsamplepreparationandanalysismethodareusedtoestimatetherandomerrorsinthevariousstagesofsampledivisionandanalysis.A1.......
【中国标准分类号】:D21
【国际标准分类号】:73_040
【页数】:11P.;A4
【正文语种】:英语
【原文标准名称】:分析用煤样品的标准制备方法
【标准号】:ASTMD2013/D2013M-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D05.23
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:煤
【英文主题词】:coal;composite;division;reduction;Coalsamplingsystems
【摘要】:Otherstandardsareusedtocollectthegrosssample:PracticeD2234/D2234Mallowsforonedivisionofthegrosssamplebeforecrushing.Themassandtopsizeofthegrossordividedsamplecollectedbyusingtheseguidesandpracticesareusuallytoolargeforchemicalorphysicaltesting.PracticeD2013provideinstructionsforreducinganddividingthegrossordividedsample,byon-lineoroff-lineprocesses,orboth,toatopsizeandmasssuitabletotheperformanceoftesting.Anybiasinthegrossordividedsamplebeforeadherencetothispracticewillremaininthefinalsampleresultingfromuseofthispractice.Therefore,carefullyselectthestandardtobeusedtocollectthegrosssample.Divisionandreductionofasamplemayoccuratmorethanonelocation.Mostoften,thesampleiscollected,reduced,anddivided(oneormoretimes)byuseofamechanicalsamplingsystem.Theremainingsamplemaybefurtherdividedon-sitetofacilitatetransportingittothelaboratorywherefurtherreductionanddivisionlikelyoccursbeforeanalysis.Inplaces,thispracticerequiresairdryingthesamplebeforesubsequentreduction.Proceduresforairdryingandair-drylossdeterminationareprovidedinTestMethodD3302.Mostoften,samplesarereducedanddividedtoananalysissample.However,sometestsmayrequireasampleofdifferentmassortopsize.Thisproceduremaybeusedtoprovideasampleofanymassandsizeconsistfromthegrossordividedsampleto,andincluding,theanalysissample.Thispracticealsospecifieshowtopreparecompositesamples,ifrequired.1.1Thispracticecoversthereductionanddivisionofgrossordividedsamples,andthepreparationofcompositesamples,uptoandincludingtheindividualportionsforlaboratoryanalysis.1.2Reductionanddivisionproceduresareprescribedforcoalsofthefollowinggroups:1.2.1GroupAincludescoalsthathavebeencleanedinallsizes.1.2.2GroupBincludesallothercoals.UnknowncoalsaretobeconsideredunderGroupB.1.2.3GroupAallowssmallerweightlaboratorysamplestoberetainedthanGroupB.Theselowerweightsmaybeusedforparticularcoalsiftheyhavebeenshown,byusingtheproceduresofAnnexA1.2,togiveasamplepreparationandanalysisvariancewhichisnomorethan20%ofthetotalanalysisvariance.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareprovidedforinformationpurposesonly.A1.1.1Thismethodcoversproceduresforcheckingprecisionofsamplepreparationandanalysisofthevariousstages.Thedataobtainedfromtestsusingconsistentsamplepreparationandanalysismethodareusedtoestimatetherandomerrorsinthevariousstagesofsampledivisionandanalysis.A1.......
【中国标准分类号】:D21
【国际标准分类号】:73_040
【页数】:11P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 硬质泡沫塑料开孔与闭孔体积百分率试验方法 |
| 英文名称： | Cellular plastics-Determination of volume percentage of open and closed cells of rigid materials |
| 中标分类： | 化工 >> 合成材料 >> 合成树脂、塑料 |
| ICS分类： | 橡胶和塑料工业 >> 泡沫材料 |
| 替代情况： | 被GB/T 10799-2008代替 |
| 发布部门： | 国家技术监督局 |
| 发布日期： | 1989-03-31 |
| 实施日期： | 1990-01-01 |
| 首发日期： | 1989-03-31 |
| 作废日期： | 2008-09-01 |
| 主管部门： | 中国轻工业联合会 |
| 提出单位： | 中华人民共和国轻工业部 |
| 归口单位： | 轻工业部塑料加工应用科学研究所 |
| 起草单位： | 武汉塑料研究所 |
| 起草人： | 杨学武 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 1900-01-01 |
| 页数： | 12页 |
适用范围
本标准规定了硬质泡沫塑料开孔与闭孔体积百分率的测定方法。
本标准适用于硬质泡沫塑料开孔与闭孔体积百分率的测定。
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 化工 合成材料 合成树脂 塑料 橡胶和塑料工业 泡沫材料