ISO 2999-1974 工业用焦磷酸钠焦磷酸盐含量的测定电位滴定法

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Product Code:SAE ARP1139
Title:Crew Safety Provision for Cargo Aircraft (Cancelled Dec 2002, Superseded by ARP4101/9)
Issuing Committee:S-7 Flight Deck Handling Qualities Stds For Trans Aircraft
Scope:This document recommends provisions for crew safety and survival which are intended to apply to cargo aircraft and equipment. This ARP applies specifically to cargo aircraft regardless of means of propulsion or design speed regimes, including V/STOL types.【英文标准名称】:Modularorderforthedevelopmentofmechanicalstructuresforelectronicequipmentpractices-Sectionalspecification-Interfaceco-ordinationdimensionsforthe25mmequipmentpractice
【原文标准名称】:研制电子设备机械构件用模块排序.第2部分:25mm设备接口配合尺寸规格的实施规程
【标准号】:BSEN60917-2-1994
【标准状态】:现行
【国别】:英国
【发布日期】:1994-11-15
【实施或试行日期】:1994-11-15
【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】:组装件;建筑物;兼容性;组件;坐标(数学);柜橱;定义;定义(术语);设计;制定;尺寸规格;电气工程;电子工程;电子设备;电子设备及元件;家具;界面;接口(数据处理);电气连接件用接口;制造;机械接口;模数;模数协调;插盒;印制电路板;货架;分规范;标准;结构体系;结构;辅助框架;组织;阀门
【英文主题词】:Assemblies;Buildings;Compatibility;Components;Coordinates(mathematics);Cupboards;Definition;Definitions;Design;Developments;Dimensions;Electricalengineering;Electronicengineering;Electronicequipment;Electronicequipmentandcomponents;Furniture;Interfaces;Interfaces(dataprocessing);Interfacesofelectricalconnections;Manufacturing;Mechanicalinterfaces;Modular;Modularcoordination;Plugboxes;Printed-circuitboards;Racks;Sectionalspecification;Standards;Structuralsystems;Structuring;Subracks;Texture;Valves
【摘要】:ThispartofIEC917maybeappliedtoallfieldsofelectronicsinwhichequipmentandinstallationswithamodulardesignareused.TheobjectofthispartofIEC917istodefineasectionalspecificationforthemechanicalstructureofa25mmequipmentpracticetoprovidefordimensionalcompatibilityatmechanicalinterfaceswithrelatedengineeringapplications,e.g.plug-inunits,printedboards,components,instrumentation,furniture,rooms,buildings,etc.Itspecifiestheco-ordinationdimensionsandpitchesforcabinets,racks,subracksandchassisofalltypesusedforelectronicequipmentin,forexampleindustrialelectronics,informationtechnology,measurementandcontrolsystemsandcommunications.Thechosenco-ordinationdimensionsforthemechanicalstructureforheights,widthsanddepths,liewithinahomogeneous,metricmodularthree-dimensionalgridasspecifiedinIEC917.InthispartofIEC917,themountingpitches25mmand2,5mmhavebeenusedasabasetodeterminetheinterfaceco-ordinationdimensionsfortheelectronicequipmentpractice.Thiscreatestheoptimumconditionsfortheapplicationofcomputer-aidedmethodsthroughoutdesignandmanufacturesuchas,forinstance,computer-aidedplanning,development,manufacturing,testingandinstallation.ThecabinetsandracksinthispartofIEC917representaspecificstructuralformwhichtakesintoconsiderationforinstancetheinstallationofsubracksandchassis.Thedeterminedinterfaceco-ordinationdimensionsfortheoveralloutsideandaperturedimensionsofsubracksprovidespaceforindependentlycreatedplug-inunitstobeinstalled.Theseplug-inunitdimensionsshallfollowtherulesofIEC917-0andIEC917andaretobedeterminedindetailspecifications.Theconnectorsystemused(0,5;1,0;2,0;2,5mm,etc.connectorgrid)andthespecialapplicationrequirementsaretobedeterminedinassociateddetailspecifications.FurtherstandardsmaybeusedinconjunctionwiththispartofIEC917:IEC297-1:1986,Dimensionsofmechanicalstructuresofthe482.6mm(19inch)series-Part1:Panelsandracks.IEC297-2:1982,Dimensionsofmechanicalstructuresofthe482,6mm(19inch)series-Part2:Cabinetsandpitchesofrackstructures.
【中国标准分类号】:L94
【国际标准分类号】:31_190
【页数】:24P;A4
【正文语种】:英语