【英文标准名称】:Methodofdeterminationofthresholdsofhearingusingsoundfieldaudiometrywithpuretoneandnarrow-bandtestsignals
【原文标准名称】:使用纯音和窄带测试信号声场测听术测定听力阈的方法
【标准号】:BS7636-1993
【标准状态】:作废
【国别】:英国
【发布日期】:1993-04-15
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:声学测量;声信号;听觉;误差修正;听力学;听力测定;校准;试验条件;声测量;信号失真;听觉阈
【英文主题词】:audiometry;signaldistortion;acousticsignals;auditorythreshold;audiology;calibration;errorcorrection;hearing(auditoryperception);testingconditions;acousticmeasurement
【摘要】:
【中国标准分类号】:A59
【国际标准分类号】:17_140_50
【页数】:20P;A4
【正文语种】:英语


【英文标准名称】:Opticalfibres-Productspecifications-General
【原文标准名称】:光纤.产品规范.总则
【标准号】:BSEN60793-2-2008
【标准状态】:作废
【国别】:英国
【发布日期】:2009-03-31
【实施或试行日期】:2009-03-31
【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】:涂层;通信系统;定义;设计;尺寸;电插头;电气工程;电子工程;电子设备及元件;纤维光学;光纤;总论;玻璃纤维光缆;测量;测量技术;单模纤维;多模纤维;光波导;光电子学;产品规范;产品标准;质量保证;分规范;规范;规范(验收);测试;类型
【英文主题词】:Coatings;Communicationsystems;Definition;Definitions;Design;Dimensions;Electricplugs;Electricalengineering;Electronicengineering;Electronicequipmentandcomponents;Fibreoptics;Generalsection;Glassfibrecables;Measurement;Measuringtechniques;Monomodefibres;Multimodefibres;Opticalwaveguides;Optoelectronics;Productspecifications;Productstandards;Qualityassurance;Sectionalspecification;Specification;Specification(approval);Testing;Types
【摘要】:ThispartofIEC60793containsthegeneralspecificationsforbothmultimodeandsinglemodeopticalfibres.Sectionalspecificationsforeachofthefourmultimodecategories:A1,A2,A3,andA4containrequirementsspecifictoeachcategory.Asectionalspecificationforallsingle-modecategoriescontainsrequirementscommontoallsingle-modefibres.Withineachsectionalspecification,familyspecifications–foundasnormativeannexes–containrequirementsfortheapplicablesub-categories.Thesesub-categoriesaredistinguishedonthebasisofdifferentfibretypesorapplications.Therequirementsofthisstandardapplytoallcategories.Eachsectionalspecificationcontainstherequirementsthatarecommontoallthefamilyspecificationsthatarewithinit.Thesecommonrequirementsarecopiedtothefamilyspecificationforeaseofreference.Testsormeasurementmethodsaredefinedforeachspecifiedattribute.Wherepossible,thesedefinitionsarebyreferencetoanIECstandard–otherwisethetestormeasurementmethodisoutlinedintherelevantsectionalspecification.Thefollowingtabledefinesthesectionalspecifications.Therelevantfamilyspecificationsaredefinedwithinthesectionalspecificationsasnormativeannexes(seeTables2and3)
【中国标准分类号】:M33
【国际标准分类号】:33_180_10
【页数】:14P.;A4
【正文语种】:英语