DIN ETS 300138-1992 综合业务数字网络(ISDN).封闭式用户组的附加服务.数字用户信号系统1号(DSS1)协议
时间:2024-04-27 18:19:33 来源: 标准资料网 作者：标准资料网 阅读：8773
【英文标准名称】:IntegratedServicesDigitalNetwork(ISDN);ClosedUserGroup(CUG)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;englishversionETS300138:1992
【原文标准名称】:综合业务数字网络(ISDN).封闭式用户组的附加服务.数字用户信号系统1号(DSS1)协议
【标准号】:DINETS300138-1992
【标准状态】:作废
【国别】:德国
【发布日期】:1992-11
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电信;用户;综合服务数字网络;传输协议;数字连接;电话交换站;信号传输
【英文主题词】:digitalconnections;transmissionprotocol;telecommunication;telecommunications;signaltransmission;isdn;telephoneexchanges;users
【摘要】:
【中国标准分类号】:L78
【国际标准分类号】:2450
【页数】:31P;A4
【正文语种】:德语
Product Code:SAE AIR64
Title:Electrical and Electronic Equipment Cooling in Commercial Transports
Issuing Committee:Ac-9 Aircraft Environmental Systems Committee
Scope:This document considers the cooling of equipment installed in equipment centers, which usually consist of rack-mounted equipment and panel mounted equipment in the flight deck. In instances where these two locations result in different requirements, these are identified. For purposes of this document, the cooled equipment is referred to generally as E/E equipment, deonting that both electrical and electronic equipment is considered, or as an E/E equipment line-replaceable-unit (LRU). The majority of cooled equipment takes the form of LRUs. This document primarily relates to E/E equipment which is designed to use forced air cooling in order to maintain the equipment operating performance (within acceptable tolerances), and to maintain reliability. Cooling may be applied internally or externally to the case of the item of E/E equipment. There are also E/E equipment items which are cooled by natural convection, conduction, and radiation to the surrounding environment.Specification requirements, system design considerations, component design, and system testing are described. Also described are the analysis and test considerations for the thermal design of the avionic equipment. The discussion of supplementary cooling systems includes consideration of a refrigeration system. requirements, system design considerations, component design, and system testing are described. Also described are the analysis and test considerations for the thermal design of the avionic equipment. The discussion of supplementary cooling systems includes consideration of a refrigeration system.【英文标准名称】:Milkandmilkproducts-Determinationofalkalinephosphataseactivity-Part2:fluorometricmethodforcheese.
【原文标准名称】:牛奶和奶制品.碱性磷酸酶活性的测定.第2部分:干酪的荧光计法
【标准号】:NFV04-054-2-2003
【标准状态】:现行
【国别】:法国
【发布日期】:2003-06-01
【实施或试行日期】:2003-06-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:X16
【国际标准分类号】:67_100_30
【页数】:17P;A4
【正文语种】:其他