SAE J1939/71 Vehicle Application Layer
时间:2024-05-12 05:55:36 来源: 标准资料网 作者：标准资料网 阅读：9250
Product Code:SAE J1939/71
Title:Vehicle Application Layer
Issuing Committee:Truck Bus Control And Communications Network Committee
Scope:As described in the parent document, SAE J1939, there are a minimum of seven documents required to fully define a complete version of this network. This particular SAE Recommended Practice, SAE J1939-71, describes an Application Layer for vehicle use.
【英文标准名称】:SelectionofAquifer-TestMethodinDeterminingofHydraulicPropertiesbyWellTechniques
【原文标准名称】:用水井技术测定水力特性的水层试验方法中的选择
【标准号】:ASTMD4043-1991
【标准状态】:作废
【国别】:美国
【发布日期】:1991
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;井的建造;喷泉;水力(利)工程
【英文主题词】:testing;hydraulicengineering;fountains;wellconstructions
【摘要】:
【中国标准分类号】:P55
【国际标准分类号】:93_160
【页数】:5P;A4
【正文语种】:英语
【英文标准名称】:Acoustics-Measurementofinsertionlossofductedsilencerswithoutflow-Laboratorysurveymethod
【原文标准名称】:声学.无气流管道消声器插入的损耗测量.实验室调查法
【标准号】:BSENISO11691-1997
【标准状态】:作废
【国别】:英国
【发布日期】:1997-03-15
【实施或试行日期】:1997-03-15
【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】:实验室试验;空调系统;性能;再现性;试验室;声强;试验设备;声学;噪声控制装置;声学测量;声学设备;频率;噪声控制;管廊;声源;调查;消声器
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Airducts;Cables;Calibration;Canals;Checkingequipment;Classes;Definitions;Ducts;Enginesilencers;Flow;Insertionloss;Laboratorytesting;Laboratorytests;Loudspeakers;Measurement;Measurementcircuits;Measuringenvironment;Measuringequipment;Measuringtechniques;Microphones;Mineralwool;Noiseabatement;Precision;Reverberationrooms;Sonictesting;Sound;Soundmeters;Soundsources;Testresults;Testing
【摘要】:1GeneralThisInternationalStandardspecifiesalaboratorysub-stitutionmethodtodeterminetheinsertionlosswithoutflowofducted,mainlyabsorbent,circularandrectangularsilencers,aswellasotherductelementsforuseinventilatingandair-conditioningsystems.NOTE1LaboratorymeasurementproceduresforductedsilencerswithsuperimposedflowaredescribedinISO7235.ThisInternationalStandardisapplicabletosilencerswherethedesignvelocitydoesnotexceed15m/s.Asthemethoddoesnotincludeself-generatedflownoise,thisInternationalStandardisnotsuitablefortestsonsilencerswherethistypeofnoiseisofgreatimportancefortheevaluationofthesilencerper-formance.TheinsertionlossdeterminedaccordingtothisInter-nationalStandardinalaboratorywillnotnecessarilybethesameastheinsertionlossthatwillbeobtainedinaninstallationinthefield.Differentsoundandflowfieldsintheductwillyielddifferentresults.AsthisInternationalStandardrequiresregulartestducts,theresultsmayincludesomeflankingtransmissionviastructuralvibrationsintheductwalls,thatsetsanupperlimittotheinsertionlossthatcanbedeter-mined.NOTE2ISO7235givesmethodsfordeterminingthislimit.ThisInternationalStandardisintendedtobeusedforcircularsilencerswithdiametersof80mmto2000mmorrectangularsilencerswithcross-sectionalareaswithinthesamerange.2MeasurementuncertaintyExactinformationontheprecisionofthemethodcannotbegivenatthistime.ThereforethisInter-nationalStandardisdenotedasurveystandard.Interlaboratorytestsarenecessaryforthedetermi-nationofthestandarddeviationofreproducibility,σR,ofthemethod(relevanttermsandmethodsaregiveninISO5725-1).Itis,however,estimatedthatthismethodwillhaveaσRwhichiscomparabletothatofISO7235.Seetable1.
【中国标准分类号】:A42
【国际标准分类号】:17_140_99
【页数】:18P.;A4
【正文语种】:英语