IEC 60068-2-35-1973 基本环境试验规程.第2部分:试验.第35节:试验Fda:宽带随机振动.高再现性
时间:2024-05-20 10:41:36 来源: 标准资料网 作者：标准资料网 阅读：9894
【英文标准名称】:Basicenvironmentaltestingprocedures.Part2:Tests.TestFda:Randomvibrationwideband-ReproducibilityHigh
【原文标准名称】:基本环境试验规程.第2部分:试验.第35节:试验Fda:宽带随机振动.高再现性
【标准号】:IEC60068-2-35-1973
【标准状态】:作废
【国别】:国际
【发布日期】:1973
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC104
【标准类型】:()
【标准水平】:()
【中文主题词】:轧制宽带材;再现性;环境;环境试验;乱真信号;材料试验;试验;电气工程;振动
【英文主题词】:reproducibility;vibration;environment;electricalengineering;environmentaltesting;materialstesting;widemillstrip;noise(spurioussignals);testing
【摘要】:
【中国标准分类号】:A21
【国际标准分类号】:19_040
【页数】:49P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforPreparationofSoilSamplesbyHotplateDigestionforSubsequentLeadAnalysis
【原文标准名称】:用热板溶解法连续分析铅含量用土壤样品制备的标准实施规程
【标准号】:ASTME1726-2001(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【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】:E06.23
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:digestion;lead;samplepreparation;soils;Aciddigestion;Atomicabsorptionspectrometry(AAS);Digestion;Dryingconditions/processing;FAAS(flameatomicabsorptionspectrometry);Graphitefurnaceatomicabsorptionspectrometry(GFAAS);Homogenizatio
【摘要】:Thereisaneedtomonitortheleadcontentinandaroundbuildingsandrelatedstructuresinordertodeterminethepotentialleadhazard.Hence,effectiveandefficientmethodsarerequiredforthepreparationofsoilsamplesfordeterminationoftheirleadcontent.Thispracticemaybeusedforthedigestionofsoilsamplesthatarecollectedduringvariousconstructionandrenovationactivitiesassociatedwithleadabatementinandaroundbuildingsandrelatedstructures.Thepracticeisalsosuitableforthedigestionofsoilsamplesforleadanalysescollectedfromotherlocations,suchasnearroadsandsteelstructures.Thispracticeisintendedtobeusedtopreparesamplesthathavebeencollectedforhazardassessmentpurposes.Thispracticeisnotcapableofdeterminingleadboundwithinmatrices,suchassilica,thatarenotsolubleinnitricacid.Thispracticeincludesdryingandhomogenizationstepsinordertohelpassurethatreportedleadresultsarerepresentativeofthesampleandareindependentofpotentialdifferencesinsoilmoisturelevelsamongdifferentsamplinglocationsorchangingweatherconditions.1.1Thispracticecoversdrying,homogenization,andaciddigestionofsoilsamplesandassociatedqualitycontrol(QC)samplesusingahotplatetypemethodforthedeterminationofleadusinglaboratoryatomicspectrometryanalysistechniquessuchasInductivelyCoupledPlasmaAtomicEmissionSpectrometry(ICP-AES),FlameAtomicAbsorptionSpectrometry(FAAS),andGraphiteFurnaceAtomicAbsorptionSpectrometry(GFAAS).1.2ThispracticeisbasedonU.S.EPASW846,TestMethod3050.1.3Thispracticecontainsnotesthatareexplanatoryandarenotpartofthemandatoryrequirementsofthisstandard.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z18
【国际标准分类号】:71_040_50
【页数】:5P.;A4
【正文语种】:英语
【英文标准名称】:Wellscreensandcasingsofunplasticizedpolyvinylchloride(PVC-U)fortubewell-Part3:DN250toDN400withtrapezoidalthread
【原文标准名称】:管井用未增塑聚氯乙烯井滤网和铸件.第3部分:带梯形螺纹的DN250至DN400
【标准号】:DIN4925-3-1999
【标准状态】:现行
【国别】:德国
【发布日期】:1999-04
【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】:塑料;喷泉;钻井;梯形螺纹;过滤器;塑料管;未增塑聚氯乙烯;未增塑聚氯乙烯;滤管;聚氯乙烯;水常规;螺纹;材料;管;尺寸;规范(验收);材料强度
【英文主题词】:trapezoidalthreads;threads;plastics;filters;unplasticizedpolyvinylchloride;fountains;plasticpipes;specification(approval);drilledwells;filterpipes;materials;pvc-u;dimensions;strengthofmateria
【摘要】:ThedocumentlaysdowntherequirementsandthemeasuresforplasticswellscreensandcasingsofPVC-UwithnominaldiametersDN250toDN400andthethreadedjoints.Thepipesservethefittingoutoftubewellsfortheobtainingofgroundwater.
【中国标准分类号】:G33;E92
【国际标准分类号】:23_040_20
【页数】:8P;A4
【正文语种】:德语