BS EN 3912-2007 航空航天系列.镀银FE-PA2601(FE-PA92HT,A286)型长螺纹细杆六瓣凹槽平头螺栓耐热钢.分类:1100MPa(环境温度)/650℃

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【英文标准名称】:Aerospaceseries-Bolts,panhead,sixloberecess,relievedshank,longthread,inheatresistingsteelFE-PA2601(FE-PA92HT,A286),silverplated-Classification:1100MPa(atambienttemperature)/650°C
【原文标准名称】:航空航天系列.镀银FE-PA2601(FE-PA92HT,A286)型长螺纹细杆六瓣凹槽平头螺栓耐热钢.分类:1100MPa(环境温度)/650℃
【标准号】:BSEN3912-2007
【标准状态】:现行
【国别】:英国
【发布日期】:2007-04-30
【实施或试行日期】:2007-04-30
【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】:航空航天运输;航空运输;合金钢;高温;内驱动;作标记;材料;平头螺钉;特性;镀银;航天运输;规范(验收);钢;表面处理;表面;螺纹
【英文主题词】:Aerospacetransport;Airtransport;Alloysteels;Headscrews;Hightemperature;Internaldrive;Marking;Materials;Multilingual;Panheadscrews;Properties;Screws(bolts);Silver-coated;Spacetransport;Specification(approval);Steels;Surfacetreatment;Surfaces;Threads
【摘要】:Thisstandardspecifiesthecharacteristicsofpanheadboltswithsixloberecess,relievedshankandlongthread,inFE-PA2601(FE-PA92HT),silverplated,foraerospaceapplications.Classification:1100MPa1)/650°C2)NOTETakingaccountoftherecessgeometry,thestrengthclasstobeusedfortheseatingtorquecalculationshallnotbegreaterthan900MPa.
【中国标准分类号】:V20
【国际标准分类号】:49_030_20
【页数】:12P.;A4
【正文语种】:英语


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【英文标准名称】:StandardTestMethod(AnalyticalProcedure)forDeterminingHydraulicPropertiesofaConfinedAquiferTakingintoConsiderationStorageofWaterinLeakyConfiningBedsbyModifiedHantushMethod
【原文标准名称】:用改良的hantus方法测定越流性隔水层中包括蓄水层的封闭含水层水压特性的标准试验方法
【标准号】:ASTMD6028-1996(2010)e1
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【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】:D18.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aquifers;aquifertests;confinedaquifers;confiningbeds;controlwells;groundwater;hydraulicproperties;leakance;leakyaquifers;observationwells;storagecoefficient;transmissivity;Storage--aquifers;Transmissivity;Confinedaquifer
【摘要】:Assumptions:Thecontrolwelldischargesataconstantrate,Q.Thecontrolwellisofinfinitesimaldiameterandfullypenetratestheaquifer.Theaquiferishomogeneous,isotropic,andareallyextensive.Theaquiferremainssaturated(thatis,waterleveldoesnotdeclinebelowthetopoftheaquifer).Theaquiferisoverlainorunderlain,orboth,everywherebyconfiningbedsindividuallyhavinguniformhydraulicconductivities,specificstorages,andthicknesses.TheconfiningbedsareboundedonthedistalsidesbyoneofthecasesshowninFig.1.1.1Thistestmethodcoversananalyticalprocedurefordeterminingthetransmissivityandstoragecoefficientofaconfinedaquifertakingintoconsiderationthechangeinstorageofwaterinoverlyingorunderlyingconfiningbeds,orboth.Thistestmethodisusedtoanalyzewater-levelorheaddatacollectedfromoneormoreobservationwellsorpiezometersduringthepumpingofwaterfromacontrolwellataconstantrate.Withappropriatechangesinsign,thistestmethodalsocanbeusedtoanalyzetheeffectsofinjectingwaterintoacontrolwellataconstantrate.1.2ThisanalyticalprocedureisusedinconjunctionwithTestMethodD4050.1.3Limitations8212;ThevaliduseofthemodifiedHantushmethod(1)islimitedtothedeterminationofhydraulicpropertiesforaquifersinhydrogeologicsettingswithreasonablecorrespondencetotheassumptionsoftheHantush-Jacobmethod(TestMethodD6029)withtheexceptionthatinthiscasethegainorlossofwaterinstorageintheconfiningbedsistakenintoconsideration(see5.1).Allpossiblecombinationsofimpermeablebedsandsourcebeds(forexample,bedsinwhichtheheadremainsuniform)areconsideredonthedistalsideoftheleakybedsthatconfinetheaquiferofinterest(seeFig.1).1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P13
【国际标准分类号】:13_060_10
【页数】:9P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforAlpha-Particle-EmittingIsotopesofRadiuminWater
【原文标准名称】:水中镭的α粒子放射性同位素标准试验方法
【标准号】:ASTMD2460-2005
【标准状态】:作废
【国别】:美国
【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(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:核能;放射性;放射性核素;镭;试验;水
【英文主题词】:Nuclearenergy;Radioactivity;Radionuclides;Radium;Testing;Water
【摘要】:
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50;13_060_60
【页数】:7P;A4
【正文语种】:英语