【英文标准名称】:Aerospaceseries-SteelFE-PM2701(X2NiCoMo18-8-5).Vacuuminductionmeltedandvacuumarcremelted-Solutiontreatedandprecipitationtreated.Plate-6mm$2Ja40mm-1750MPaRm2000MPa
【原文标准名称】:航空航天系列.FE-PM2701(X2NiCoMo18-8-5)型钢.真空感应熔炼和真空电弧再熔炼.固溶处理和沉淀处理.厚板材.6mm≤a≤40mm.1750Mpa≤Rm≤2000Mpa
【标准号】:BSEN3532-2007
【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;化学成分;尺寸规格;硬化的;感应熔炼;材料;机械性能;多语种的;物理性能;板;特性;半成品;固溶处理;航天运输;规范(验收);钢板;钢;真空熔炼
【英文主题词】:Aerospacetransport;Airtransport;Chemicalcomposition;Dimensions;Hardened;Inductionmeltings;Materials;Mechanicalproperties;Multilingual;Physicalproperties;Plates;Properties;Semi-finishedproducts;Solutiontreated;Spacetransport;Specification(approval);Steelplates;Steels;Vacuummelting
【摘要】:Thisstandardspecifiestherequirementsrelatingto:SteelFE-PM2701(X2NiCoMo18-8-5)VacuuminductionmeltedandvacuumarcremeltedSolutiontreatedandprecipitationtreatedPlate6mm
【中国标准分类号】:V11
【国际标准分类号】:49_025_10
【页数】:10P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforOn-LinepHMeasurementofWaterofLowConductivity
【原文标准名称】:在线测量低导电水pH的标准试验方法
【标准号】:ASTMD5128-1990(2005)
【标准状态】:现行
【国别】:
【发布日期】:1990
【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】:D19.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:水;pH值;试验方法
【英文主题词】:highpurity;lowconductivity;on-line;pH
【摘要】:pHmeasurementsaretypicallymadeinsolutionsthatcontainrelativelylargeamountsofacid,base,ordissolvedsalts.Undertheseconditions,pHdeterminationsmaybemadequicklyandprecisely.Continuouson-linepHmeasurementsinwatersamplesoflowconductivityaremoredifficult(4,5).Theselowionicstrengthsolutionsaresusceptibletocontaminationfromtheatmosphere,samplestreamhardware,andthepHelectrodes.Variationsintheconstituentconcentrationoflowconductivitywaterscauseliquidjunctionpotentialshifts(see3.1.1)resultinginpHmeasurementerrors.Theaggressivenatureandthehighelectricalresistanceofpureandultra-pure,lowconductivitywatersmaydegradethepHmeasurementelectrodesresultinginunstableanddriftingpHoutputsignals.Itisessentialtomakeon-linepHmeasurementsoflowconductivitywaterasaccuratelyaspossibletodeterminethepropercontrolofpHadjustmentchemicals,theeffectivenessofdemineralizerequipment,theeventandnatureofimpuritycontaminationofthewater,andinformationpertainingtotheoverallstatusofthepurewatersystem.1.1Thistestmethodcoversthepreciseon-linedeterminationofpHinwatersamplesofconductivitylowerthan100[mu]S/cm(seeTables1and2)overthepHrangeof3to11(seeFig.1),underfieldoperatingconditions,utilizingasealed,non-refillable,referenceelectrode.pHmeasurementsofwateroflowconductivityareproblematicalforconventionalpHelectrodes,methods,andrelatedmeasurementapparatus.1.2ThistestmethodincludestheproceduresandequipmentrequiredforthecontinuouspHmeasurementoflowconductivitywatersamplestreamsincludingtherequirementsforthecontrolofsamplestreampressure,flowrate,andtemperature.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:71_040_50
【页数】:11P.;A4
【正文语种】: