【英文标准名称】:StandardTestMethodforOpen-ChannelFlowMeasurementofWaterbyVelocity-AreaMethod
【原文标准名称】:用速度面积法测量明渠水流量的标准试验方法
【标准号】:ASTMD3858-1995(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1995
【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】:D19.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:dischargemeasurement;openchannelflow;waterdischarge;Openchannelflow--water;Watervelocity
【摘要】:Thistestmethodisusedtomeasurethevolumerateofflowofwatermovinginriversandstreamsandmovingoverorthroughlargeman-madestructures.Itcanalsobeusedtocalibratesuchmeasuringstructuresasdamsandflumes.Measurementsmaybemadefrombridges,cableways,orboats;bywading;orthroughholescutinanicecover.Thistestmethodisusedinconjunctionwithdeterminationsofphysical,chemical,andbiologicalqualityandsedimentloadingswheretheflowrateisarequiredparameter.1.1Thistestmethodcoversthemeasurementofthevolumerateofflowofwaterinopenchannelsbydeterminingtheflowvelocityandcross-sectionalareaandcomputingthedischargetherefrom(Refs(1-7)).1.2Theproceduresdescribedinthistestmethodarewidelyusedbythoseresponsibleforthecollectionofstreamflowdata,forexample,theU.S.GeologicalSurvey,BureauofReclamation,U.S.ArmyCorpsofEngineers,U.S.DepartmentofAgriculture,WaterSurveyCanada,andmanystateandprovincialagencies.Theproceduresaregenerallyfrominternaldocumentsoftheabovelistedagencies,whichhavebecomethedefactostandardsasusedinNorthAmerica.1.3Thistestmethodcoverstheuseofcurrentmeterstomeasureflowvelocities.Dischargemeasurementsmaybemadetoestablishisolatedsinglevalues,ormaybemadeinsetsorinaseriesatvariousstagesorwater-levelelevationstoestablishastage-dischargerelationatasite.Ineithercase,thesametestmethodisfollowedforobtainingfielddataandcomputationofdischarge.1.4MeasurementsforthepurposeofdeterminingthedischargeinefficiencytestsofhydraulicturbinesarespecifiedinInternationalElectrotechnicalCommissionPublication41forthefieldacceptancetestsofhydraulicturbines,andarenotincludedinthistestmethod.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:
【页数】:9P.;A4
【正文语种】:英语


【英文标准名称】:Firedetectionandfirealarmsystems-Part24:Componentsofvoicealarmsystems-Loudspeakers;EnglishversionofDINEN54-24:2008-06
【原文标准名称】:火灾检测和报警系统.第24部分:声音报警系统的组件.扩音器
【标准号】:DINEN54-24-2008
【标准状态】:现行
【国别】:德国
【发布日期】:2008-06
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:声学试验;声学;警报系统;通告;可听度;建筑物;气候条件;气候荷载;气候试验;腐蚀;定义;设计;环境条件;外部面积;火灾警报;建筑物防火;消防;频率范围;内部区域;语言;扩音器;材料;机械环境影响(对人体);消息广播设备;声压级;规范(验收);语言交流;测试;试验要求;公用事业设备
【英文主题词】:Acoustictesting;Acoustics;Alarmsystems;Announcements;Audibility;Buildings;Climaticcondition;Climaticloading;Climatictests;Corrosion;Definition;Definitions;Design;Environmentalcondition;Exteriorareas;Firealarms;Firesafetyinbuildings;Firefighting;Frequencyranges;Interiorareas;Languages;Loudspeakers;Materials;Mechanicaleffects(humanbody);Messagebroadcastingequipment;Soundpressurelevel;Specification(approval);Speech;Testing;Testingrequirements;Utilityequipment
【摘要】:ThisEuropeanStandardspecifiesrequirements,testmethodsandperformancecriteriaforloudspeakersintendedtobroadcastawarningoffirebetweenafiredetectionandfirealarmsystemandtheoccupantsofabuildin9ThisEuropeanStandardspecifiesloudspeakersfortwotypesofapplicationenvironment:typeA,generallyforindooruseandtypeB,generallyforoutdooruse.ThisEuropeanStandarddoesnotcoverloudspeakersforspecialapplications,forexampleloudspeakerforuseinhazardousapplications,ifsuchapplicationsrequireadditionalorotherrequirementsorteststhanthose9iveninthisEuropeanStandard.ThisEuropeanStandardisnotintendedtocoveraddressableloudspeakers,loudspeakerswithactivecomponents.VoicealarmsoundersarecoveredinEN54-3:2001.
【中国标准分类号】:C81
【国际标准分类号】:13_220_20
【页数】:60P.;A4
【正文语种】:英语