【英文标准名称】:Testingofgaseousfuelsandothergases-Determinationofsulfurcompoundscontent-Part8:Gaschromatographicdeterminationofdihydrogensulfide,carbonylsulfideandothersulfurcompoundsusingspecificdetectors
【原文标准名称】:气体燃料和其它气体的检测.硫化物含量的测定.第8部分:用对比探测装置对二氢硫化物、羰基硫化物和其它硫化合物作气体色谱分析测定
【标准号】:DIN51855-8-1997
【标准状态】:现行
【国别】:德国
【发布日期】:1997-06
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;气体的;添味剂加入器;含量;试验设备;煤气;掺和剂;硫;燃料;易燃材料;添味;天然气;气味控制;化学分析和试验;气味;燃气技术;气体燃料;气体燃料;硫化合物;气体;含量测定;电化学方法;硫无机化合物;采掘
【英文主题词】:
【摘要】:Thegaschromatographicmethodisusedforthedeterminationofthecontentofsulfurcompounds(i.e.dihydrogensulfide,carbonylsulfide),determinedasmassconcentrationinmg/m,ingaseousfuelsandothergases.#,,#
【中国标准分类号】:E46
【国际标准分类号】:75_160_30
【页数】:8P;A4
【正文语种】:德语


【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损失的测量.实验室测量法
【标准号】:BSENISO11691-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2010-05-31
【实施或试行日期】:2010-05-31
【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】: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;Safetyofmachinery;Sonictesting;Sound;Soundmeters;Soundsources;Testresults;Testing;Testingdevices
【摘要】:ThisInternationalStandardspecifiesalaboratorysubstitutionmethodtodeterminetheinsertionlosswithoutflowofducted,mainlyabsorbent,circularandrectangularsilencers,aswellasotherductelementsforuseinventilatingandair-conditioningsystems.ThisInternationalStandardisapplicabletosilencerswherethedesignvelocitydoesnotexceed15m/s.Asthemethoddoesnotincludeselfgeneratedflownoise,thisInternationalStandardisnotsuitablefortestsonsilencerswherethistypeofnoiseisofgreatimportancefortheevaluationofthesilencerperformance.TheinsertionlossdeterminedaccordingtothisInternationalStandardinalaboratorywillnotnecessarilybethesameastheinsertionlossthatwillbeobtainedinaninstallationinthefield.Differentsoundandflowfieldsintheductwillyielddifferentresults.AsthisInternationalStandardrequiresregulartestducts,theresultsmayincludesomeflankingtransmissonviastructuralvibrationintheductwalls,thatsetsanupperlimittotheinsertionlossthatcanbedetermined.ThisInternationalStandardisintendedtobeusedforcircularsilencerswithdiametersof80mmto2000mmorrectangularsilencerswithcross-sectionalareaswithinthesamerange.
【中国标准分类号】:P31
【国际标准分类号】:17_140_20;91_120_20;91_140_30
【页数】:14P.;A4
【正文语种】:英语