IEC 61842-2002 语音通信用传声器和耳机

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【英文标准名称】:Microphonesandearphonesforspeechcommunications
【原文标准名称】:语音通信用传声器和耳机
【标准号】:IEC61842-2002
【标准状态】:现行
【国别】:国际
【发布日期】:2002-03
【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/TC100
【标准类型】:()
【标准水平】:()
【中文主题词】:测量技术;作标记;传声器;电声学;头戴送受话器;变压器;声学;耳机;语音传输;参数;测量;电气工程;规范(验收);特性;定义;分类
【英文主题词】:Acoustics;Classification;Communication;Definitions;Earphones;Ears;Electricalengineering;Electricalequipment;Electricalsafety;Electroacoustics;Enclosures;Environment;Environmentaleffect;Headphones;Languages;Marking;Measurement;Measuringtechniques;Microphones;Noise(environmental);Parameters;Properties;Sound;Specification(approval);Speechtransmission;Transformers
【摘要】:Thisstandardappliestothemicrophonepartandearphonepartofhandsets,headsetsorearsetsforspeechcommunications,andalsotothemicrophoneunitsandearphoneunitsofbuilt-inhandsets,headsetsorearsets.Theobjectofthisstandardistoestablishdefinitionsrelatingtotheseelectroacoustictransducers,andtostandardizethecharacteristicstobespecifiedandtherelevantmethodsofmeasurement.Thisdoesnotexcludetheuseofothermethodsofmeasurementwhichcanbeshowntogivethesameormorereliableresults.
【中国标准分类号】:L31
【国际标准分类号】:17_140_50;33_160_50
【页数】:28P.;A4
【正文语种】:英语


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Product Code:SAE AS85449/1
Title:Clamp Assembly, Saddle Type, Cushioned, Fuel and Petroleum Based Hydraulic Fluid
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:no scope available【英文标准名称】:StandardTestMethodofAcceleratedLaboratoryTestofNaturalDecayResistanceofWoods
【原文标准名称】:木材抗自然腐烂的加速实验室试验的标准试验方法
【标准号】:ASTMD2017-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D07.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:加速度试验;建筑;施工材料;抗衰减;衰减;实验室试验;工艺;试验;木材
【英文主题词】:decay;evaluation;laboratory;natural;resistance
【摘要】:Thistestmethodisusefulindeterminingtherelativedecayresistancebetweenvariousspeciesofwood.Itisaninitialmeansofestimatingtheabilityofawoodspeciestoresistseveremicrobialattackand,thereby,qualifyingtheperformancelevelofawoodspecies.Thistestmethodisnotintendedtoprovidequantifiablyreproduciblevalues.Itisaqualitativetestmethoddesignedtoprovideareproduciblemeansofestablishingrelativedecayresistancebetweenvariousspeciesofwood.1.1Thistestmethodcoverstheevaluationofthenaturaldecayresistanceofwood.Thetestmethodmayalsobeusedtoevaluatetheresistanceofwoodproductsorofotherorganicmaterialssubjecttodecaybywood-destroyingfungi,suchasthoseemployedinthetest.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B71
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】: