标准资料网-标准资料免费资源平台

【英文标准名称】:SURFACEACTIVEAGENTS.SULFATEDETHOXYLATEDALCOHOLSANDALKYLPHENOLS.DETERMINATIONOFCONTENTOFUNSULFATEDMATTER.
【原文标准名称】:表面活性剂.硫酸化乙氧化醇和烷基酚.末硫酸化物质含量的测定
【标准号】:NFT73-242-1988
【标准状态】:作废
【国别】:法国
【发布日期】:1988-10
【实施或试行日期】:1988-09-20
【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】:化学分析和试验;化学分析;含量测定;苯酚;硫酸盐;表面活性剂;醇;脂族醇;芳香醇
【英文主题词】:chemicalanalysisandtesting;chemicalanalysis;phenol;sulphates;alcohols;aliphaticalcohols;aromaticalcohols;surfactants;determinationofcontent
【摘要】:
【中国标准分类号】:G72
【国际标准分类号】:
【页数】:2P;A4
【正文语种】:其他


【英文标准名称】:Informationtechnology-Datainterchangeon90mmopticaldiskcartridges-Capacity:640Mbytespercartridge
【原文标准名称】:信息技术90mm盒式光盘上的数据交换容量:每盒640MB
【标准号】:ISO/IEC15041-1997
【标准状态】:现行
【国别】:国际
【发布日期】:1997-04
【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
【标准类型】:()
【标准水平】:()
【中文主题词】:数据处理;定义;盒式光盘;物理性能;尺寸;机械性能;信息交换;磁道格式;光盘;信息技术;规范(验收);光学特性;数据记录
【英文主题词】:Dataprocessing;Datarecording;Definition;Definitions;Dimensions;Informationinterchange;Informationtechnology;Mechanicalproperties;ODC;Opticaldisks;Opticalproperties;Physicalproperties;Specification(approval);Trackformats
【摘要】:ThisInternationalStandarddefinesthecharacteristicsof90mmOpticalDiskCartridges(ODC)withacapacityof640MbytesperCartridge.TheStandardspecifiesfiverelated,butdifferentimplementationsofsuchcartridges,viz.TypeR/WProvidesfordatatobewritten,readanderasedmanytimesoverthewholerecordingsurfaceofthediskusingthethermo-magneticandmagneto-opticaleffects.TypeDOWProvidesfordatatobewrittenandreadmanytimesoverthewholerecordingsurfaceofthedisk,usingthedirectoverwritethermo-magneticandmagneto-opticaleffectsrequiringasingleexternalmagneticfield.TypeP-ROMProvidesforapartofthedisksurfacetobeembossedbystampingorothermeans.Thispartofthediskisreadwithoutrecoursetothemagneto-opticaleffect.AllpartswhicharenotembossedprovidefordatatomeettherequirementsofTypeR/W.TypeP-DOWProvidesforapartofthedisksurfacetobeembossedbystampingorothermeans.Thispartofthediskisreadwithoutrecoursetothemagneto-opticaleffect.AllpartswhicharenotembossedprovidefordatatomeettherequirementsofTypeDOW.TypeO-ROMProvidesforthewholeofthedisksurfacetobeembossedandreproducedbystampingorothermeans.Thistypeofdiskisreadwithoutrecoursetothemagneto-opticaleffect.TypeR/WandTypeDOWarealsoreferredtoas"fullyrewritable",TypeP-ROMandTypeP-DOWas"partiallyembossed"andTypeO-ROMas"fullyembossed".ForeachType,thisInternationalStandardprovidesfor512-byteand2048-bytesectors.Allsectorsonadiskareofthesamesize.ThisInternationalStandardspecifies-theconditionsforconformancetestingandtheReferenceDrive;-theenvironmentsinwhichthecartridgesaretobeoperatedandstored;-themechanicalandphysicalcharacteristicsofthecartridge,soastoprovidemechanicalinterchangeabilitybetweendataprocessingsystems;-theformatoftheinformationonthedisk,bothembossedanduser-written;includingthephysicaldispositionofthetracksandsectors,theerrorcorrectioncodes,andthemodulationmethodused;-thecharacteristicsoftheembossedinformationonthedisk;-themagneto-opticalcharacteristicsofthedisk,enablingprocessingsystemstowritedataontothedisk;-theminimumqualityofuser-writtendataonthedisk,enablingdataprocessingsystemstoreaddatafromthedisk.ThisInternationalStandardprovidesforinterchangebetweenopticaldiskdrives.Togetherwithastandardforvolumeandfilestructure,itprovidesforfulldatainterchangebetweendataprocessingsystems.
【中国标准分类号】:L64
【国际标准分类号】:35_220_30
【页数】:126P.;A4
【正文语种】:英语