GB 4588.2-1984 有金属化孔的单 双面印制板技术条件
时间:2024-05-18 20:56:14 来源: 标准资料网 作者：标准资料网 阅读：9105
基本信息
| 标准名称： | 有金属化孔的单 双面印制板技术条件 |
| 中标分类： |
电子元器件与信息技术 >>
电子元件 >>
印制电路 |
| 替代情况： | 被GB/T 4588.1-1996代替 被GB/T 4588.2-1996代替 |
| 发布日期： | |
| 实施日期： | 1985-05-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 10页 |
适用范围
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前言
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引用标准
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所属分类： 电子元器件与信息技术 电子元件 印制电路
【英文标准名称】:SpecificationforEglassfibrewovenrovingfabricsforthereinforcementofpolyesterandepoxyresinssystems
【原文标准名称】:聚酯和环氧树脂装置增强用的E形玻璃纤维粗纱织物规范
【标准号】:BS3749-1991
【标准状态】:现行
【国别】:英国
【发布日期】:1991-06-28
【实施或试行日期】:1991-06-28
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:玻璃纤维;密度;聚酯;加强材料;机织物;粗纱;环氧树脂;宽度;包装;作标记;抽样方法;尺寸公差;断裂荷载;厚度;定货;纺织产品;布;质量(物质);汰(纱线);叠层板材;织纹组织;纺织玻璃纤维;试样制备;名称与符号
【英文主题词】:Breakingload;Cloth;Density;Designations;Dimensionaltolerances;Epoxyresins;Glassfibres;Laminates;Marking;Mass;Ordering;Packaging;Polyesters;Reinforcingmaterials;Roving(fibre);Samplingmethods;Specimenpreparation;Tex;Textileglass;Textileproducts;Thickness;Weave;Width;Wovenfabrics
【摘要】:FabricsupdatedinlinewithcurrenttechnologyandtestmethodsalignedwithrecentlypublishedISOStandards.
【中国标准分类号】:Q36
【国际标准分类号】:59_100_10
【页数】:12P;A4
【正文语种】:英语
【英文标准名称】:PracticeforDefiningSize,Calibration,Resolution,andCountingAccuracyofLiquid-BorneParticleCounterUsingNear-MonodisperseSphericalParticulateMaterial
【原文标准名称】:使用近似单向扩散球形颗粒材料定义液体传送颗粒计数器的尺寸、校准、分辨率和计数精度惯例
【标准号】:ANSI/ASTMF658-2000
【标准状态】:现行
【国别】:美国
【发布日期】:2000
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:计数器;尺寸;颗粒;校正
【英文主题词】:size;particles;calibration;counters
【摘要】:Thispracticecoversproceduresforcalibratinganddeterminingperformanceofanopticalliquid-borneparticlecounter(LPC)whichusesanopticalsystembaseduponlightextinctionmeasurement.ThispracticeisdirectedtowardsdeterminationofaccuracyandresolutionoftheLPCforcharacterizingthesizeandnumberofparticles,whichhavebeenpassedintothesampleinletoftheLPC.Considerationofinletsamplingefficiencyisnotpartofthispractice.Theprocedurescoveredinthispracticeincludethosetomeasuresamplevolumeandflowrate,zerocountlevel,particlesizingandcountingaccuracy,particlesizingresolution,particlecountingefficiency,andparticleconcentrationlimit.Theparticlesizeparameterreportedinthispracticeistheequivalentopticaldiameterbasedonprojectedareaofcalibrationparticleswithknownphysicalpropertiesdispersedinliquid.ThemanufacturernormallyspecifiestheminimumdiameterthatcanbereportedbyanLPC;thedynamicrangeoftheLPCbeinguseddeterminesthemaximumdiameterthatcanbereportedforasinglesample.Typicalminimumreporteddiametersareapproximately2'm,andatypicaldynamicrangespecificationwillbeapproximatelyfrom50to1.ThecountingratecapabilityoftheLPCislimitedbytemporalcoincidenceofparticlesinthesensingvolumeoftheLPCandbythesaturationlevelormaximumcountingratecapabilityoftheelectronicsizingandcountingcircuitry.CoincidenceisdefinedasthesimultaneouspresenceofmorethanoneparticlewithintheLPCopticallydefinedsensingzoneatanytime.Thecoincidencelimitisastatisticalfunctionofparticleconcentrationinthesampleandthesensingzonevolumewhenparticlesizeisinsignificantincomparisontothesensingvolumedimensions.Thislimitationmaybemodifiedbythepresenceofparticleswithdimensionsolargeastobeasignificantfractionofthesensingzonedimension.ThesaturationlevelrateoftheelectroniccountingcircuitryshallbespecifiedbythemanufacturerandisnormallygreaterthantheLPCrecommendedmaximumcountingratefortheparticleconcentrationsusedforanyportionofthispractice.CalibrationinaccordancewithallpartsofthispracticemaynotberequiredforroutinefieldcalibrationofanLPCunlesssignificantchangeshaveoccurredinoperationoftheLPCormajorcomponentrepairsorreplacementshavebeenmade.TheLPCshallthenbetakentoasuitablemetrologyfacilityforcompletecalibration.Normalroutinefieldcalibrationmaydeterminesampleflowrate,zerocountlevel,andparticlesizingaccuracy.ThespecificLPCfunctionstobecalibratedshallbedeterminedonthebasisofagreementbetweenthepurchaserandtheuser.Themaximumtimeintervalbetweencalibrationsshallbedeterminedbyagreementbetweenthepurchaserandtheuser,butshallnotexceedtwelvemonths,unlessLPCstabilityforlongerperiodsisverifiedbymeasurementsinaccordancewiththispractice.Thisstandardmayinvolvehazardousmaterials,operation,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G04
【国际标准分类号】:17_020
【页数】:
【正文语种】:英语