GB 6393.1-1986 工业碳酸氢钠 碳酸钠的测定 滴定法
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来源:标准资料网
基本信息
| 标准名称： | 工业碳酸氢钠 碳酸钠的测定 滴定法 |
| 中标分类： |
化工 >>
无机化工原料 >>
无机盐 |
| 替代情况： | 被GB/T 1606-1998代替 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1987-05-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 2页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 化工 无机化工原料 无机盐
【英文标准名称】:Informationtechnology-Keyboardlayoutsfortextandofficesystems-Part1:Generalprinciplesgoverningkeyboardlayouts
【原文标准名称】:信息技术.文本和办公设备用键盘布局.第1部分:键盘布局管理用一般原则
【标准号】:ISO/IEC9995-1-2006
【标准状态】:作废
【国别】:国际
【发布日期】:2006-09
【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/SC35
【标准类型】:()
【标准水平】:()
【中文主题词】:数据处理;数据处理设备;数据系统工程;定义;测定;总论;信息技术;键盘;键(键盘);布置;办公室设备;办公机器;位置;规范;打字机;用户接口
【英文主题词】:Dataprocessing;Dataprocessingequipment;Datasystemsengineering;Definitions;Determinations;Generalsection;Informationtechnology;Keyboards;Keys(keyboards);Layout;Officeequipment;Officemachines;Position;Specifications;Typewriters;Userinterface
【摘要】:lSO/IEC9995specifiesvariouscharacteristicsofkeyboardsusedbyinformationtechnologyequipment(ITE),e.g.a)personalcomputers,workstations,computerterminals,VDTs(visualdisplayterminals),typewriters,etc.,havinganalphanumerickeyboard;b)calculators,telephonesandautomatedtellermachineshavinganumerickeypad.ThekeyboarddefinedinlSO/IEC9995istheconventionallinearkeyboard,whichisphysicallydividedintosectionsandthesectionsintozoneswithinwhichthekeysarelaidout.InthispartoflSO/IEC9995,thesectionsofthekeyboardareidentifiedandthegeneralshapeandrelativeplacementofthesectionsarespecified.SpacingofkeysandphysicalcharacteristicsarecoveredinthispartoflSO/IEC9995,asaretheprinciplesgoverningtheplacementofcharactersandsymbolsonkeys.ThispartofISO/IEC9995specifiesakeynumberingsystemwhichappliestoalltypesofnumeric,alphanumericandcompositekeyboardsofITE.ThispartoflSO/IEC9995specifiestheprinciplesgoverningtheplacementofcharactersandsymbolsonkeysusedonalltypesofnumeric,alphanumericandcompositekeyboardsofITE.AlthoughthekeyboarddefinedbylSO/IEC9995maybeusedfordifferentlanguages,thespecificationsarewrittenasapplyingtoLatinlanguageswithacharacterpathfromlefttorightandalineprogressionfromtoptobottom.Theprimarylayoutwithinthealphanumericzoneisestablishedinmostcountriesbyanationalstandardorbynationalusage.AllocationguidelinesareprovidedinlSO/IEC9995-2.ComplementarylayoutsarespecifiedinlSO/lEC9995-3.ThispartoflSO/IEC9995definescharacteristicsrelatedtointerface1inFigure1.lSO/IEC9995specifiestheallocationoffunctions(graphiccharactersand/orcontrolfunctions)tokeys.Thegraphiccharactersandthecontrolfunctionshavebeengivencommonnamesintendedtobefamiliartotheusersofakeyboard.Ingeneral,keyboardsarenotexpectedtogeneratecodedcontrolfunctions,buttheoperationofacontrolfunctionkeymaycauseanumberofcodedcontrolfunctionstoappearindatainterchangetoachievethedesiredeffect.TheeffectsofthosekeysthataffectkeyboardstatesarespecifiedinotherpartsoflSO/IEC9995.
【中国标准分类号】:L63
【国际标准分类号】:35_180
【页数】:13P;A4
【正文语种】:英语
Product Code:SAE AS8914
Title:Bearing, Roller, Self-Aligning, Airframe, Antifriction
Issuing Committee:Acbg Rolling Element Bearing Committee
Scope:This specification covers the requirements for nonseparable antifriction roller bearings.
