【英文标准名称】:Acoustics-Soundabsorbersforuseinbuildings-Ratingofsoundabsorption
【原文标准名称】:声学.建筑物用吸声装置.吸声定标
【标准号】:BSENISO11654-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-11-15
【实施或试行日期】:1997-11-15
【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】:额定值;隔音材料;隔音;形状;声学测量;噪声控制;分类系统;建筑物;声音吸收;数学计算
【英文主题词】:
【摘要】:1ThisInternationalStandardspecifiesamethodbywhichthefrequency-dependentvaluesofthesoundabsorptioncoefficientcanbeconvertedintoasinglenumber.Beforethisisdone,theone-third-octavebandvaluesofthesoundabsorptioncoefficientmeasuredinaccordancewithISO354areconvertedintooctavebands.InannexBaclassificationmethod,basedonthesesinglenumbers,isgivenforinformation.2Thesingle-numberratingspecifiedinthisInternationalStandardcanbeusedtoformulaterequirementsandtodescribeacousticalpropertiesofsound-absorbingproductstobeusedforroutineapplicationsinnormaloffices,corridors,classrooms,hospitals,etc.Theratingisnotappropriatewhentheproductsaretobeusedinqualifiedenvironmentsrequiringcarefulacousticaldesignbyexpertise.Insuchcases,onlycompletesoundabsorptiondataasafunctionoffrequencyaresatisfactory.ThisInternationalStandardisnotapplicableunlesstheapplicationscoverthewholefrequencyrangeofthereferencecurve.Ifonlyapartofthisrangeisofinterest,itmaybemoreappropriatetolookforproductswithagoodsoundabsorptionwithinthisrangeonly.TheshapeindicatorsdescribedinthisInternationalStandardgivesomeguidanceinidentifyingsuchproductswhichmayhavearelativelylowsinglenumberbutamuchhigherpotentialifamorerestrictedfrequencyrangeisconsidered.Suchproductsshouldbejudgedfromthecompletesoundabsorptioncurve.AstheratingcurveinthisInternationalStandardhasasalowerlimitthe250Hzoctaveband,theratingisnotappropriatebelowthisfrequency.Ifsuchlowfrequenciesareofinterest,referencemustbemadetothecompletesoundabsorptioncurve.ThisInternationalStandardis,inprinciple,applicabletoallbuildingproductsforwhichthesoundabsorptioncoefficienthasbeendeterminedinaccordancewithISO354.Itis,however,oftennotsuitableforapplicationtosingleitems,suchaschairs,baffles,etc.,norisitapplicabletoroadbarriersandroadsurfaces.
【中国标准分类号】:P31
【国际标准分类号】:91_120_20
【页数】:18P;A4
【正文语种】:英语


【英文标准名称】:Pressureregulatorsforusewithmedicalgases.Part4:low-pressureregulatorsintendedforincorporationintomedicalequipment.
【原文标准名称】:医疗气体用压力调节器.第4部分:医疗设备安装的低压调节器
【标准号】:NFS95-179-1998
【标准状态】:作废
【国别】:法国
【发布日期】:1998-12-01
【实施或试行日期】:1998-12-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:压力调节器;燃烧;色码;性能;压力控制;流动特性;救护服务;维修;病人;润滑脂;尺寸;作标记;流动;包装件;氦;流量测量;氮;流量计;压力调节器安装;压力释放;氧;医用气体;呼吸作用;供应系统;点火试验;气压调速器;笑气;二氧化碳;空气;定义;低压;制造日期;试验设备;呼吸设备;安全工程;安全要求;规范(验收);信息;功能;密封材料;测量仪器;钢气瓶阀;气体;特性;医疗设备;试验;设计;储气瓶
【英文主题词】:Air;Breathingequipment;Burnout;Carbondioxide;Colourcodes;Dataofthemanufacturer;Definition;Definitions;Design;Dimensions;Flow;Flowcharacteristics;Flowmeasurement;Flowmeters;Functions;Gascylinders;Gaspressuregovernors;Gases;Greases;Helium;Ignitiontest;Information;Inscription;Laughinggas;Lowpressure;Maintenance;Marking;Measuringinstruments;Medicalequipment;Medicalgases;Nitrogen;Oxygen;Packages;Patients;Performance;Pressurecontrol;Pressureregulationinstallations;Pressureregulators;Pressurereleases;Properties;Rescueandambulanceservices;Respiration;Safetyengineering;Safetyrequirements;Sealingmaterials;Specification(approval);Supplysystems;Testequipment;Testing;Valveforsteelcylinders
【摘要】:
【中国标准分类号】:C47
【国际标准分类号】:11_040_10;23_060_40
【页数】:25P.;A4
【正文语种】:其他