【英文标准名称】:Specificationforharmonizedsystemofqualityassessmentforelectroniccomponents.Blankdetailspecification:pulsedmagnetrons(excludingfrequencyagilemagnetrons)
【原文标准名称】:电子元器件质量评定协调体系.空白详细规范.脉冲磁控管(不包括频率捷变磁控管)
【标准号】:BSCECC36001-1977
【标准状态】:作废
【国别】:英国
【发布日期】:1977-10
【实施或试行日期】:1977-10-00
【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】:微波管;统计质量控制;磁控管;微波器件;资格鉴定;电子波管;脉冲发生器;脉冲电路;电子管;详细规范;检验;评估的质量;电子设备及元件;质量管理;鉴定试验;质量保证体系;规范(审批)
【英文主题词】:
【摘要】:
【中国标准分类号】:L37;L00
【国际标准分类号】:
【页数】:18P;A4
【正文语种】:英语
基本信息
| 标准名称： | 商业零售业同质竞争管理规范 |
| 发布部门： | 中华人民共和国商务部 |
| 发布日期： | 2012-08-01 |
| 实施日期： | 2012-11-01 |
| 首发日期： | |
| 作废日期： | |
| 出版社： | 中国标准出版社 |
| 出版日期： | 2012-11-01 |
适用范围
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前言
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目录
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引用标准
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所属分类： 食品 制烟 制烟综合 农业 烟草 烟草制品和烟草工业设备
【英文标准名称】:StandardPracticeforMeasuringFluidizationSegregationTendenciesofPowders
【原文标准名称】:测量粉末的液体化分离趋势的标准实施规程
【标准号】:ASTMD6941-2005e1
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D18.24
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:分层;流态化;测量;粉末
【英文主题词】:fluidization;powder;segregation
【摘要】:Fluidizationsegregationcancauseverticalsegregationwithinbinsusedtoholdandtransportpowders.Thiscanaffectfinalproductqualityinindustrialapplications.Bymeasuringapowderrsquo;segregationtendency,onecancompareresultstootherpowderswithknownhistory,ordetermineifthegivenpowdermayhaveatendencytosegregateinagivenprocess.Finepowdersgenerallyhavealowerpermeabilitythancoarsebulksolidsandthereforetendtoretainairlonger.Thus,whenabinisbeingfilledwithafluidizablepowder,thecoarserparticlessettleoraredrivenintothebedwhilethefinerparticlesremainfluidizednearthesurface.Fluidization,whichservesasadrivingforceforthismechanismofsegregation,islikelytooccurwhenfinepowdersarepneumaticallyconveyedintoabin,thebinisfilledordischargedathighrates,orifsufficientairflowcountertotheflowofpowderispresentwithinthebin.Note18212;Thequalityoftheresultproducedbythispracticeisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthispracticearecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.PracticeD3740wasdevelopedforagenciesengagedinthetestingand/orinspectionofsoilandrock.Assuchitisnottotallyapplicabletoagenciesperformingthispractice.However,usersofthispracticeshouldrecognizethattheframeworkofPracticeD3740isappropriateforevaluatingthequalityofanagencyperformingthispractice.Currentlythereisnoknownqualifyingnationalauthoritythatinspectsagenciesthatperformthispractice.1.1Thispracticecoversanapparatusandprocedureforsimulatingthesegregationtendenciesofpowdersbymeansofthefluidizationmechanism.1.2Powdersmustbecapableofbeingfluidizedinordertobetestedbythispractice.1.3Temperature-andhumidity-sensitivepowdersmayneedtobetestedatdifferenttemperaturesandmoisturecontents,aswouldhappeninanindustrialenvironment.Further,thegassupply(type,temperature,andhumidity)shouldalsomatchtheindustrialconditions.1.4Thisstandardisnotapplicabletoallbulksolidsandsegregationmechanisms:whilefluidizationisacommonsegregationmechanismexperiencedbymanyfinepowders,othersegregationmechanismsnotevaluatedbythisstandardmightinducesegregationinpractice.1.5Theextenttowhichsegregationwilloccurinanindustrialsituationisnotonlyafunctionofthepowderanditstendencytosegregate,butalsothehandlingequipment(forexample,bindesign),process(forexample,transferrates),andenvironment.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:19_120
【页数】:4P.;A4
【正文语种】: