BS EN 60268-16-2011 音响系统设备.通过语言传输系统指数测定语言清晰度的客观评级
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来源:标准资料网
【英文标准名称】:Soundsystemequipment.Objectiveratingofspeechintelligibilitybyspeechtransmissionindex
【原文标准名称】:音响系统设备.通过语言传输系统指数测定语言清晰度的客观评级
【标准号】:BSEN60268-16-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2011-09-30
【实施或试行日期】:2011-09-30
【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】:
【英文主题词】:Acousticequipment;Acoustictesting;Audiovisual;Auditorium;Definitions;Degreeofmodulation;Descriptions;Electricalengineering;Evaluations;Externalnoise;Frequencies;Intelligibility;Interferingnoise;Languages;Measurement;Measuringtechniques;Methods;Soundtransmission;Soundtransmissioninstallations;Speechintelligibility;Speechtransmission;Transmissiondevices;Transmissionperformance
【摘要】:
【中国标准分类号】:M72
【国际标准分类号】:17_140_50;33_160_01
【页数】:78P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforEstablishingCharacteristicValuesforReinforcedGluedLaminatedTimber(Glulam)BeamsUsingMechanics-BasedModels
【原文标准名称】:用基于力学模式的增强胶合层压木材(胶合层木)梁建立特性值的标准实施规程
【标准号】:ASTMD7199-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D07.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:附加试验;调节;梁;弯曲;压缩;设计;耐久性;持续时间;弹性的;环境;胶合的;颗粒;层压的;负荷;力学;方法学;最低要求;模型;预应力的;性能;增强的;加固;安全;适用性;剪切;抗剪钢筋;国际单位制;SI单位;静荷载;硬挺度;强度性能;抗拉荷载;试验要求;测试;木料;值
【英文主题词】:
【摘要】:1.1Thispracticecoversmechanics-basedrequirementsforcalculatingcharacteristicvaluesforthestrengthandstiffnessofreinforcedstructuralgluedlaminatedtimbers(glulam)manufacturedinaccordancewithapplicableprovisionsofANSI/AITCA190.1,subjectedtoquasi-staticloadings.Itaddressesmethodstoobtainbendingpropertiesparalleltograin,aboutthex-xaxis(FbxandEx)forhorizontally-laminatedreinforcedglulambeams.Secondarypropertiessuchasbendingaboutthey-yaxis(Fby),shearparalleltograin(FvxandFvy),tensionparalleltograin(Ft),compressionparalleltograin(Fc),andcompressionperpendiculartograin(Fc)arebeyondthescopeofthispractice.Whendeterminationofsecondarypropertiesisdeemednecessary,testingaccordingtootherapplicablemethods,suchasTestMethodsD143,D198oranalysisinaccordancewithPracticeD3737,isrequiredtoestablishthesesecondaryproperties.Reinforcedglulambeamssubjectedtoaxialloadsareoutsidethescopeofthisstandard.Thispracticealsoprovidesminimumtestrequirementstovalidatethemechanics-basedmodel.1.2Thepracticealsodescribesaminimumsetofperformance-baseddurabilitytestrequirementsforreinforcedglulams,asspecifiedin.Additionaldurabilitytestrequirementsshallbeconsideredinaccordancewiththespecificend-useenvironment.providesanexampleofamechanics-basedmethodologythatsatisfiestherequirementssetforthinthisstandard.1.3Characteristicstrengthandelasticpropertiesobtainedusingthisstandardmaybeusedasabasisfordevelopingdesignvalues.However,thepropersafety,serviceabilityandadjustmentfactorsincludingdurationofload,tobeusedindesignareoutsidethescopeofthisstandard.1.4Thispracticedoesnotcoverunbondedreinforcement,prestressedreinforcement,norshearreinforcement.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.ThemechanicsbasedmodelmaybedevelopedusingSIorin.-lbunits.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B70
【国际标准分类号】:79_060_99
【页数】:11P.;A4
【正文语种】:
Product Code:SAE AMS2475
Title:Protective Treatments, Magnesium Alloys
Issuing Committee:Ams B Finishes Processes And Fluids Committee
Scope:This specification establishes the requirements for chromate conversion coatings on magnesium alloys.This process has been used typically to improve corrosion resistance and adherence of organic finishes but usage is not limited to such applications. The dichromate treatment may not be suitable for alloys with high manganese content. The chrome pickle treatment has been used as touch-up for previously dichromate-treated surfaces and for improving corrosion protection temporarily, but usages are not limited to such applications.
