DIN EN 23661-1994 离心式末端吸入泵.基座和安装尺寸(ISO3661:1977);德文版本EN23661:1993

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【英文标准名称】:StandardGuideforComparisonofFieldMethodsforDeterminingHydraulicConductivityintheVadoseZone
【原文标准名称】:测定流区中测定液体传导指数现场比较法的标准指南
【标准号】:ASTMD5126/D5126M-1990(2010)e1
【标准状态】:现行
【国别】:美国
【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】:D18.21
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:air-entrypermeameter;air-entryvalue;boreholepermeameter;hydraulicconductivity;infiltrometer;vadosezonemonitoring;Singleringinfiltrometers;Soil;Unsaturatedhydraulicconductivity;Vadosezonemonitoring;Airentrypermeameter;Boreholeper
【摘要】:Saturatedhydraulicconductivitymeasurementsaremadeforavarietyofpurposesvaryingfromdesignoflandfillsandconstructionofclaylinerstoassessmentofirrigationsystems.Infiltrometersarecommonlyusedwhereinfiltrationorpercolationratesthroughasurfaceorsubsurfacelayeraredesired.Evaluationoftherateofwatermovementthroughapondlinerisoneexampleofthiskindofmeasurement.Penetrationofthelinerbyaboreholewouldinvalidatethemeasurementoflinerpermeability.Ithasbeennotedthatsmall-ringinfiltrometersaresubjecttoerrorduetolateraldivergenceofflow.Therefore,techniquesusingverylarge(1to2-mdiameter)infiltrationbasinshavebeenrecommendedformeasuringtheveryslowpercolationratestypicallyrequiredforclayliners.Theair-entrypermeametercanbeusedinsteadofinfiltrometerteststoavoidlateraldivergenceofflow.However,becauseacylindermustbedrivenintothemediatested,theactualsoilcolumntestedmaybedisruptedbyintroductionofthecylinder,especiallyinstructuredsoils.Boreholetestsfordeterminingsaturatedhydraulicconductivityareapplicableforevaluatingtherateofwatermovementthroughsubsurfacelayers.Forslowlypermeablelayers,anaccuratemethodofmeasuringtherateofwatermovementinto1.1Thisguidecoversareviewofthetestmethodsfordetermininghydraulicconductivityinunsaturatedsoilsandsediments.Testmethodsfordeterminingbothfield-saturatedandunsaturatedhydraulicconductivityaredescribed.1.2Measurementofhydraulicconductivityinthefieldisusedforestimatingtherateofwatermovementthroughclaylinerstodetermineiftheyareabarriertowaterflux,forcharacterizingwatermovementbelowwastedisposalsitestopredictcontaminantmovement,andtomeasureinfiltrationanddrainageinsoilsandsedimentforavarietyofapplications.Testmethodsareneededformeasuringhydraulicconductivityrangingfrom1x00D7;10x2212;2to1x00D7;10x2212;8cm/s,forbothsurfaceandsubsurfacelayers,andforbothfield-saturatedandunsaturatedflow.1.3Forthesefieldtestmethodsadistinctionmustbemadebetweenx201C;saturatedx201D;(Ks)andx201C;field-saturatedx201D;
【中国标准分类号】:A44
【国际标准分类号】:07_060
【页数】:11P.;A4
【正文语种】:英语


【英文标准名称】:Safetyrequirementsforsecondarybatteriesandbatteryinstallations-Part3:Tractionbatteries
【原文标准名称】:蓄电池和电池设备的安全性要求.牵引用蓄电池
【标准号】:BSEN50272-3-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-10-24
【实施或试行日期】:2002-10-24
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:爆炸危险;使用说明;电解质;蓄电池;作标记;电气保护设备;电接触保护;电池装置;牵引用蓄电池;装置;防爆;酸性铅蓄电池;电池;危险防护;事故预防;蓄电池组;电气工程;定义;安全;电池充电车间;电气安全;安全要求;检验;规范(验收);电流;接触安全装置;文献工作;排放;气体;防电击
【英文主题词】:
【摘要】:Thisstandardappliestosecondarybatteriesandbatteryinstallationsusedforelectricvehicles,e.g.inelectricindustrialtrucks(including-lifttrucks,towtrucks,cleaningmachines,automaticguidedvehicles),inbatterypoweredlocomotives,inelectricroadvehicles(e.g.passengerandgoodsvehicles,golfcarts,bicycles,wheelchairs).Thenominalvoltagesarelimitedto1000Va.c.and1500Vd.c.respectivelyanddescribetheprincipalmeasuresforprotectionagainsthazardsgenerallyfromelectricity,gasemissionandelectrolyte.Itprovidesrequirementsonsafetyaspectsassociatedwiththeinstallation,use,inspection,maintenanceanddisposalofbatteries.Itcoverslead-acid,nickelcadmiumandotheralkalinesecondarybatteries.
【中国标准分类号】:K84
【国际标准分类号】:29_220_20
【页数】:20P;A4
【正文语种】:英语