IEC 61300-2-31-1995 纤维光学互连器件和无源元件基本试验和测量程序第2-31部分:试验核辐照
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【英文标准名称】:Fibreopticinterconnectingdevicesandpassivecomponents-Basictestandmeasurementprocedures-Part2-31:Tests-Nuclearradiation
【原文标准名称】:纤维光学互连器件和无源元件基本试验和测量程序第2-31部分:试验核辐照
【标准号】:IEC61300-2-31-1995
【标准状态】:作废
【国别】:国际
【发布日期】:1995-07
【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/SC86B
【标准类型】:()
【标准水平】:()
【中文主题词】:光波导;测量技术;光纤;试验;电气工程;纤维光学;连接工艺;辐射;γ辐射;核辐射
【英文主题词】:Connectiontechnology;Electricalengineering;Fibreoptics;Gamma-radiation;Measuringtechniques;Nuclearradiation;Opticalwaveguides;Radiation;Radioactivity;Testing
【摘要】:Dealswiththeassessmentoftheeffectsofgammaradiationonfibreopticdevices.
【中国标准分类号】:M33
【国际标准分类号】:33_180_20
【页数】:21P.;A4
【正文语种】:英语
【英文标准名称】:Informationtechnology–UPnPDeviceArchitecture–Part3-1:AudioVideoDeviceControlProtocol–AudioVideoArchitecture
【原文标准名称】:信息技术.UPnP装置结构.第3-1部分:视听装置控制协议.视听结构
【标准号】:ISO/IEC29341-3-1-2008
【标准状态】:作废
【国别】:国际
【发布日期】:2008-11
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1/SC25
【标准类型】:()
【标准水平】:()
【中文主题词】:地址(数据处理);体系机构;音频的;音频信号;电路网络;计算机系统布局;配置;控制点;数据格式;驱动器;传动装置;电子工程;娱乐电子学;文件传送;硬件;家用设备;信息交换;信息技术;接口(数据处理);因特网协议;IP;LAN;操作系统;协议;软件;系统配置;通用即插即用;UPNP;视频;视频信号;无线局域网
【英文主题词】:Addresses(dataprocessing);Architecture(IT);Audio;Audiosignals;Circuitnetworks;Computersystemsconfiguration;Configuration;Controlpoints;Dataformats;Driver;Drives;Electronicengineering;Entertainmentelectronics;Filetransfer;Hardware;Householdequipment;Informationinterchange;Informationtechnology;Interfaces(dataprocessing);InternetProtocol;IP;LAN;Operatingsystems;Protocols;Software;Systemconfiguration;UniversalPlugandPlay;UPnP;Video;Videosignals;WLAN
【摘要】:ISO/IEC29341-3-1waspreparedbyUPnPImplementersCorporationandadopted,underthePASprocedure,byjointtechnicalcommitteeISO/IECJTC1,Informationtechnology,inparallelwithitsapprovalbynationalbodiesofISOandIEC.
【中国标准分类号】:L79
【国际标准分类号】:35_200
【页数】:28P.;A4
【正文语种】:英语
Product Code:SAE J2883
Title:Laboratory Measurement of Random Incidence Sound Absorption Tests Using a Small Reverberation Room
Issuing Committee:Acoustical Materials Committee
Scope: This SAE Recommended Practice describes a laboratory test procedure for measuring the random incidence sound absorption coefficient of a material in a small size reverberant sound field by measuring decay rates. Materials for absorption treatments may include homogeneous materials, nonhomogeneous materials, or a combination of homogeneous, nonhomogeneous, and/or inelastic impervious materials. These materials are commonly installed in transportation systems such as ground vehicles, marine products, and aircraft to reduce reverberant sound build-up and thus reduce the noise level in the environment by minimizing reflections off of hard surfaces. The test method described herein was developed also to describe a way to measure the absorption performance of a part or a sound package system that will relate to an application. to rank order materials for application on panels using general automotive steel but also may be applicable to other situations or conditions.The absorption performance for most materials and systems varies as a function of frequency. Accordingly, this test procedure includes provisions for measuring absorption over a frequency range found applicable to many transportation systems. Samples that are used typically in transportation industry are not thick enough to provide any significant absorptive properties below 250 Hz. Combining the size of the sample and the frequency range of interest for automotive and related applications, this test method has been developed for conducting measurements using a small reverberation room where the frequency range of interest would be from approximately 250 to 8000 Hz 1/3rd octave band frequency.
Rationale: This SAE Recommended Practice describes a laboratory test procedure for measuring the random incidence sound absorption coefficient of a material in a small size reverberant sound field by measuring decay rates. Materials for absorption treatments may include homogeneous materials, nonhomogeneous materials, or a combination of homogeneous, nonhomogeneous, and/or inelastic impervious materials. These materials are commonly installed in transportation systems such as ground vehicles, marine products, and aircraft to reduce reverberant sound build-up and thus reduce the noise level in the environment by minimizing reflections off of hard surfaces. The test method described herein was developed also to describe a way to measure the absorption performance of a part or a sound package system that will relate to an application. to rank order materials for application on panels using general automotive steel but also may be applicable to other situations or conditions.The absorption performance for most materials and systems varies as a function of frequency. Accordingly, this test procedure includes provisions for measuring absorption over a frequency range found applicable to many transportation systems. Samples that are used typically in transportation industry are not thick enough to provide any significant absorptive properties below 250 Hz. Combining the size of the sample and the frequency range of interest for automotive and related applications, this test method has been developed for conducting measurements using a small reverberation room where the frequency range of interest would be from approximately 250 to 8000 Hz 1/3rd octave band frequency.
