【英文标准名称】:Connectorsforelectronicequipment-Testsandmeasurements-Solderingtests-Test12b-Solderability,wetting,solderingironmethod
【原文标准名称】:电子设备用连接器.试验和测量.锡焊试验.试验12b:铁焊料湿浴法测量可焊性
【标准号】:BSEN60512-12-2-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2006-04-28
【实施或试行日期】:2006-04-28
【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】:组件;电插头;电气工程;机电的;机电学;电子工程;电子设备;电子设备及元件;电子仪器;测量;测量技术;软钎焊性;焊接连接;软钎焊连接;软钎焊铁方法;应力;试验
【英文主题词】:
【摘要】:ThispartofIEC60512,whenrequiredbythedetailspecification,isusedfortestingconnectorswithinthescopeofIECtechnicalcommittee48.Itmayalsobeusedforsimilardeviceswhenspecifiedinadetailspecification.TheobjectofthispartofIEC60512istodetailastandardtestmethodtoassessthesolderabilityoftheterminationsofaconnectorthataredesignedtobesolderedwithasolderingironandthesolderingbathtestmethodofIEC60512-12-1isnotappropriate.
【中国标准分类号】:L23
【国际标准分类号】:31_220_10
【页数】:8P;A4
【正文语种】:英语


【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure-Engineeringmethodsforsmall,movablesourcesinreverberantfields-Methodsforspecialreverberationtestrooms
【原文标准名称】:声学.声压法测定噪声源的声功率级.混响声场中小声源和移动声源的工程测量方法.特殊混响试验间用方法
【标准号】:BSENISO3743-2-2009
【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】:Absorption;Acousticmeasurement;Acoustictesting;Acoustictestingrooms;Acoustics;Closedtestrooms;Definitions;Determination;Directmethod;Environment;Externalnoise;Handling;Information;Insulations;Mathematicalcalculations;Measurement;Measuringincertainity;Measuringinstruments;Measuringtechniques;Methods;Microphones;Noise(environmental);Noisemeasurements;Noisesources;Portable;Powerlevels;Precision;Pressuremeasurement(fluids);Reverberationrooms;Reverberationtime;Sound;Soundabsorption;Soundlevel;Soundpressure;Soundradiation;Soundsources;Soundspectra;Springs(water);Testing
【摘要】:ThispartofISO3743specifiesarelativelysimpleengineeringmethodfordetermingthesoundpowerlevelsofsmall,movablenoisesources.Themeasurementsarecarriedoutwhenthesourceisinstalledinaspeciallydesignedroomhavingaspecifiedreverberationtimeoverthefrequencyrangeofiterest.TheA-weightedsoundpowerlevelofthesourceundertestisdeterminedfromasingleA-weightedsoundpressurelevelmeasurementateachmicrophoneposition,ratherthanfromasummationofoctave-bandlevels.Thisdirectmethodeliminatestheneedforareferencesoundsource,butrequirestheuseofaspecialreverberationtestroom.Thedirectmethodisbasedonthepremisethatthesoundpressurelevel,averagedinspaceandtimeinthetestroom,canbeusedtodeterminethesoundpowerlevelemittedbythesource.Thepropertiesofthespecialreverberationtestroomarechosensothattheroom'sinfluenceonthesoundpoweroutputoftheequipmentundertestissmall.Thenumberofmicrophonepositionsandsourcelocationsrequiredinthetestroomarespecified.GuidelinesforthedesignofspecialreverberationroomsaregiveninannexB.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:32P.;A4
【正文语种】:英语