EN 60249-2-15-1994 印制电路用基材.第2部分:规范.第15号规范:规定易燃性软覆铜聚酰亚胺薄膜
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【英文标准名称】:Basematerialsforprintedcircuits-Part2:Specifications;specificationNo.15:Flexiblecopper-cladpolyimidefilm,ofdefinedflammability(IEC60249-2-15:1987+A1:1993);GermanversionEN60249-2-15:1994+A1:1994
【原文标准名称】:印制电路用基材.第2部分:规范.第15号规范:规定易燃性软覆铜聚酰亚胺薄膜
【标准号】:EN60249-2-15-1994
【标准状态】:现行
【国别】:
【发布日期】:1994-09
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:材料;规范(验收);作标记;塑料;试验;试验;质量;规范;特性;纸;印制电路;电子工程;箔;覆铜的;半导体工艺;材料规范;聚酰亚胺;电气工程;技术数据单;印制电路板;易燃性;可燃性;电子设备及元件;聚对苯二甲酸乙二醇酯;开关电路;燃烧特性;基底材料;塑料薄膜
【英文主题词】:Basematerials;Burningbehaviours;Combustibility;Copper-clad;Electricalengineering;Electronicengineering;Electronicequipmentandcomponents;Flammability;Foil;Marking;Materials;Materialsspecification;Paper;PETP;Plasticfilms;Plastics;Polyimides;Printedcircuits;Printed-circuitboards;Properties;Quality;Semiconductortechnology;Specification(approval);Specifications;Switchingcircuits;Technicaldatasheets;Testing;Trials
【摘要】:
【中国标准分类号】:L30
【国际标准分类号】:13_220_40;31_180
【页数】:10P.;A4
【正文语种】:英语
【英文标准名称】:Ironores--Methodsfordeterminationofbismuthcontent
【原文标准名称】:铁矿石.铋含量测定方法
【标准号】:JISM8230-1994
【标准状态】:现行
【国别】:日本
【发布日期】:1994-03-01
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonIronandSteel
【标准类型】:()
【标准水平】:()
【中文主题词】:金属矿;铋;铁矿石;化学分析和试验;含量测定;准金属
【英文主题词】:determinationofcontent;chemicalanalysisandtesting;;;;
【摘要】:この規格は,鉄鉱石中のビスマス定量方法について規定する。
【中国标准分类号】:D31
【国际标准分类号】:73_060_10
【页数】:14P;A4
【正文语种】:日语
【英文标准名称】:StandardGuideforComputedTomography(CT)SystemSelection
【原文标准名称】:计算机计算X线断层摄影术(CT)系统选择的标准指南
【标准号】:ASTME1672-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:E07.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:计算机断层摄影;导向装置;信息处理;语言的用法;医疗技术学;规范(验收);生产量
【英文主题词】:artifacts;computedtomography(CT);contrastdiscrimination;detectability;dynamicrangeimaging;non-destructiveevaluation;spatialresolution;scanservices;throughput
【摘要】:ThisguidewillaidthepurchaseringeneratingaCTsystemspecification.Thisguidecoverstheconversionofpurchaserrsquo;requirementstosystemcomponentsthatmustoccurforausefulCTsystemspecificationtobeprepared.Additionalinformationcanbegainedindiscussionswithpotentialsuppliersorwithindependentconsultants.Thisguideisapplicabletopurchasersseekingscanservices.ThisguideisapplicabletopurchasersneedingtoprocureaCTsystemforaspecificexaminationapplication.1.1Thisguidecoversguidelinesfortranslatingapplicationrequirementsintocomputedtomography(CT)systemrequirements/specificationsandestablishesacommonterminologytoguidebothpurchaserandsupplierintheCTsystemselectionprocess.ThisguideisapplicabletothepurchaserofbothCTsystemsandscanservices.Computedtomographysystemsarecomplexinstruments,consistingofmanycomponentsthatmustcorrectlyinteractinordertoyieldimagesthatrepeatedlyreproducesatisfactoryexaminationresults.Computedtomographysystempurchasersaregenerallyconcernedwithapplicationrequirements.Computedtomographysystemsuppliersaregenerallyconcernedwiththesystemcomponentselectiontomeetthepurchaser''sperformancerequirements.Thisguideisnotintendedtobelimitingorrestrictive,butrathertoaddresstherelationshipsbetweenapplicationrequirementsandperformancespecificationsthatmustbeunderstoodandconsideredforproperCTsystemselection.1.2Computedtomography(CT)maybeusedfornewapplicationsorinplaceoffilmradiography,providedthatthecapabilitytodisclosephysicalfeaturesorindicationsthatformtheacceptance/rejectioncriteriaisfullydocumentedandavailableforreview.1.3Computedtomography(CT)systemsuseasetoftransmissionmeasurementsmadealongasetofpathsprojectedthroughtheobjectfrommanydifferentdirections.Eachofthetransmissionmeasurementswithintheseviewsisdigitizedandstoredinacomputer,wheretheyaresubsequentlyconditioned(forexample,normalizedandcorrected)andreconstructedbyoneofavarietyoftechniques.Anin-depthtreatmentofCTprinciplesisgiveninGuideE1441.1.4Computedtomography(CT),aswithconventionalradiographyandradioscopicexaminations,isbroadlyapplicabletoanymaterialorobjectthroughwhichabeamofpenetratingradiationmaybepassedanddetected,includingmetals,plastics,ceramics,metallic/nonmetalliccompositematerialandassemblies.TheprincipaladvantageofCTisthatitprovidesdensitometric(thatis,radiologicaldensityandgeometry)imagesofthincrosssectionsthroughanobject.Becauseoftheabsenceofstructuralsuperposition,imagesaremucheasiertointerpretthanconventionalradiologicalimages.ThenewpurchasercanquicklylearntoreadCTdatabecauseimagescorrespondmorecloselytothewaythehumanmindvisualizes3-Dstructuresthanconventionalprojectionradiology.Further,becauseCTimagesaredigital,theimagesmaybeenhanced,analyzed,compressed,archived,inputasdataintoperformancecalculations,comparedwithdigitaldatafromothernondestructiveevaluationmodalities,ortransmittedtootherlocationsforremoteviewing.Whilemanyofthedetailsaregenericinnature,thisguideimplicitlyassumestheuseofpenetratingradiation,specificallyXraysandgammarays.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A15
【国际标准分类号】:35_240_80
【页数】:11P.;A4
【正文语种】:
