ASTM F373-2006 弹性地板覆盖物压纹深度的标准试验方法

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【英文标准名称】:StandardTestMethodforEmbossedDepthofResilientFloorCoverings
【原文标准名称】:弹性地板覆盖物压纹深度的标准试验方法
【标准号】:ASTMF373-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:F06.20
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:深度;压纹;地板覆盖物;测试
【英文主题词】:embossing;flooring;micrometer;resilient;texture
【摘要】:Thistestmethodisdesignedtomeasuretheverticaldistancebetweenanytwolevelsonthefaceoftheflooring,thatis,betweenanytwoflatareas,betweenaflatareaandanypartofatexturedarea,orbetweentwotexturedareas.Thisverticaldistancemaybeofinterestinitselforitmaybeappliedtothequestionsof:(1)howmuchofthethicknessoftheflooringisavailablebeforethepatternisdestroyed;or(2)howdeepthedepressedareasmustbebeforevalleyprintinginkisnotwalkedoninnormaltraffic.1.1Twoimportantcharacteristicsinvolvedinthemanufactureofresilientflooringrelatetothesmoothnessofthewearsurfaceandthehardnessofthelayersunderthewearsurface.Thesurfacesmayvaryfromcompletelytexturedareastoportionsthatareflatbutseparatedbytexturedareas.Thistestmethodcoversflooringwiththeseinterruptedwearsurfaceswhicharenotsupportedbysoft,cushionedlayers.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q70
【国际标准分类号】:97_150
【页数】:2P.;A4
【正文语种】:


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【英文标准名称】:Fibreopticcommunicationsystemdesignguides-Part3:Calculationofpolarisationmodedispersion
【原文标准名称】:纤维光学通信系统设计指南.第3部分:偏振模散射计算
【标准号】:IEC/TR61282-3-2006
【标准状态】:现行
【国别】:国际
【发布日期】:2006-10
【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/SC86C
【标准类型】:()
【标准水平】:()
【中文主题词】:传播学;通信系统;设计;数字信号;分散;电气工程;纤维光学;光纤;数学计算;光波导;偏振;电信;波长
【英文主题词】:Communication;Communicationsystems;Design;Digitalsignals;Dispersion;Electricalengineering;Fibreoptics;Mathematicalcalculations;Opticalwaveguides;Polarizationmodedispersion;Polarization(wavephysics);Telecommunications;Wavelengths
【摘要】:ThispartofIEC61282providesguidelinesforthecalculationofpolarizationmodedispersion(PMD)infibreopticsystemstoaccommodatethestatisticalvariationofPMDanddifferentialgroupdelay(DGD)inopticalfibrecablesandcomponents.ThistechnicalreportdescribesmethodsforcalculatingPMDduetoopticalfibrecablesandopticalcomponentsinanopticallink.ThecalculationsarecompatiblewiththosedocumentedintheoutdooropticalfibrecablespecificationIEC60794-3.ExamplecalculationsaregiventoillustratethemethodsforcalculatingtotalopticallinkPMDfromtypicalcableandopticalcomponentdata.Thecalculationsincludethestatisticsofconcatenatingindividualopticalfibrecablesdrawnfromaspecifieddistribution.ThecalculationsassumethatallcomponentshavePMDequaltothemaximumspecifiedvalue.ThecalculationsdescribedcoverfirstorderPMDonly.Thefollowingsubjectareasarecurrentlybeyondthescopeofthistechnicalreport,butremainunderstudy:–calculationofsecondandhigherorderPMD;–accommodationofcomponentswithpolarizationdependentloss(PDL)–ifitisassumedthatPDLisnegligibleinopticalfibrecables;–systemimpairments(powerpenalty)duetoPMD;–interactionwithchromaticdispersionandothernonlineareffects.MeasurementofPMDisbeyondthescopeofthistechnicalreport.MethodsofmeasurementofPMDofopticalfibreandcablearegiveninIEC60793-1-48.ThemeasurementofopticalamplifierPMDisinIEC61290-11-1.ThemeasurementofcomponentPMDisinIEC61300-3-32.MeasurementoflinkPMDisgivenin61280-4-4.Ageneraltheoryandguidanceonmeasurementsisgivenin61282-9.
【中国标准分类号】:M33
【国际标准分类号】:33_180_01
【页数】:34P.;A4
【正文语种】:英语


基本信息
标准名称:3CD267、3CD467型PNP硅高压低频大功率三极管
英文名称:Detail specification for silicon PNP low frequency high voltage high power transistors,Type 3CD267 and 3CD467
中标分类: 能源、核技术 >> 能源、核技术综合 >> 技术管理
发布日期:1983-08-19
实施日期:1984-03-01
首发日期:1900-01-01
作废日期:2010-01-20
出版日期:1900-01-01
页数:3页
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所属分类: 能源 核技术 能源 核技术综合 技术管理