【英文标准名称】:Electroacoustics-Simulatorsofhumanheadandear-Part1:Earsimulatorforthecalibrationofsupra-auralearphones
【原文标准名称】:电声学人的头和耳模拟器第1部分:超级听力耳机的校正用耳模拟器
【标准号】:IEC60318-1-1998
【标准状态】:作废
【国别】:国际
【发布日期】:1998-07
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC29
【标准类型】:()
【标准水平】:()
【中文主题词】:助听器;听力测定;模拟器;耳模拟器;耳机;头;仿真耳;校正;电气工程;头戴送受话器;声学
【英文主题词】:Acoustics;Artificialears;Audiometers;Audiometry;Calibration;Definitions;Deviations;Earsimulators;Earphones;Ears;Electricalengineering;Electroacoustics;Environment;Environmentaltests;Frequencies;Head(anatomy);Headphones;Hearingaids;Lossofhearing;Materials;Measurementmicrophones;Microphones;People;Pressurecompensation;Referencelevels;Simulators;Specification(approval);Testingconditions;Widebandtransmission;Widemillstrip
【摘要】:ThisInternationalStandardrelatestothespecificationofanearsimulatorwhichcoversthefrequencyband20Hzto10000Hzandisintendedforcalibratingsupra-auralearphonesusedinaudiometryandtelephonometryappliedtotheearwithoutacousticalleakage.NOTE-Thisdeviceisnotintendedforthecalibrationofcircumauralearphones.However,IEC60318-2specifiesanadaptorforusewiththisearsimulatortoprovideaninterimacousticcouplerforthecalibrationofacircumauralaudiometricearphone.
【中国标准分类号】:L31
【国际标准分类号】:17_140_50
【页数】:21P;A4
【正文语种】:英语


【英文标准名称】:Railwayapplications-Track-Switchesandcrossings-Part4:actuation,lockinganddetection.
【原文标准名称】:铁路设施.轨道.铁路侧线和道岔口.第4部分:驱动、锁紧和检测
【标准号】:NFF52-010-4/IN1-2011
【标准状态】:现行
【国别】:法国
【发布日期】:2011-12-01
【实施或试行日期】:
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Acceptance(approval);Acceptanceinspection;Acceptancespecification;Actuatingdevice;Changes;Definitions;Detectiondevices;Diamondcrossings;Efficiency;Levelcrossings;Lockingdevices;Mechanicalinterfaces;Performance;Permanentways;Pointwork;Railwayapplications;Railwayconstruction;Railwayinstallations;Railways;Specification(approval);Testing;Tracks(materialshandlingequipment);Travelways;Turnouts
【摘要】:
【中国标准分类号】:S12
【国际标准分类号】:45_080
【页数】:5P;A4
【正文语种】:其他