NF S52-719-1994 速度滑雪板.弹性的测定

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【英文标准名称】:Roadwaylightingequipment-Locking-typephotocontroldevicesandmatingreceptaclephysicalandelectricalinterchangeabilityandtesting
【原文标准名称】:道路照明设备.锁紧式光控制设备和配套插座结构和电气互换性及检验
【标准号】:IEEEC136.10-1996
【标准状态】:现行
【国别】:美国
【发布日期】:1996-01-01
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(US-IEEE)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:控制;街道照明;锁紧装置;光学系统;照明系统;照明设备;室外照明;光探测器;插座;插入式继电器;试验;灯;控制系统
【英文主题词】:control;opticalsystems;photodetectors;outdoorlighting;receptacles;testing;controlsystems;lightingsystems;lamps;streetlighting;lightingplants;plug-inrelays;lockingdevices
【摘要】:Thisstandardcoverslocking-typephotocontrolsusedinroadwayandarealightingequipment,whichmaybephysicallyandelectricallyinterchangedtooperatewithinestablishedvalues.
【中国标准分类号】:K73
【国际标准分类号】:93_080_30;29_120_60
【页数】:20P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforCalculatedCetaneIndexofDistillateFuels
【原文标准名称】:计算馏出燃料十六烷指数用标准试验方法
【标准号】:ASTMD976-2006
【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】:D02.E0.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:机动车燃料;十六烷;十六烷值;数学计算;石油产品;工艺
【英文主题词】:cetane;cetaneindex;dieselfuel
【摘要】:TheCalculatedCetaneIndexisonetoolavailableforestimatingASTMcetanenumberwhereatestengineisnotavailablefordeterminingthisproperty.Itmaybeemployedforapproximatingcetanenumberwherethequantityofsampleistoosmallforanenginerating.Incaseswherethecetanenumberofafuelhasbeeninitiallyestablished,theindexisusefulasacetanenumbercheckonsubsequentsamplesofthatfuel,provideditssourceandmodeofmanufactureremainunchanged.TestMethodD4737mayalsobeusedtoapproximatetheASTMcetanenumberofdieselfuels.3.2.1ProcedureAofTestMethodD4737wasdevelopedasaresultofalargerdegreeofoffsetbetweenTestMethodD976CetaneIndexandtheresultsofTestMethodD613overtheentirerangeofthecorrelation.Generally,ithasbeenfoundthatuseofTestMethodD4737resultsinlessoffsetthanuseofTestMethodD976,buttherecanbespecificcaseswherethisisnottrue.3.2.2ProcedureAofTestMethodD4737isrecommendedtoestimatethecetanenumberofdieselfuelswithsulfurcontentsabove500ppmorNo.1x2013;Ddieselfuels.3.2.3ProcedureBofTestMethodD4737isrecommendedtoestimatethecetanenumberofNo.2x2013;Ddieselfuelswithsulfurcontentsatorbelow500ppm.CalculatedCetaneIndex,asdescribedinTestMethodD976x2013;80,isrecognizedbytheUnitedStatesEPAasanalternativemethodtomeettheU.S.FederalDieselaromaticslimitfordieselfuelscontaininglessthan500ppmsulfur.TheequationforCalculatedCetaneIndexinTestMethodD976x2013;80andinthisversion(D976x2013;06)ofthetestmethodarethesame.1.1ThistestmethodcoverstheCalculatedCetaneIndexformula,whichrepresentsameansfordirectlyestimatingtheASTMcetanenumberofdistillatefuelsfromAPIgravityandmid-boilingpoint.Theindexvalue,ascomputedfromtheformula,istermedtheCalculatedCetaneIndex.1.2TheCalculatedCetaneIndexisnotanoptionalmethodforexpressingASTMcetanenumber.Itisasupplementarytooltoestimatecetanenumberwhenusedwithdueregardforitslimitations.1.3TheCalculatedCetaneIndexformulaisparticularlyapplicabletostraight-runfuels,catalyticallycrackedstocks,andblendsofthetwo.Note1ThistestmethodistemporarilyretainedbecausetheproposaltotheU.S.EPAtocontroldieselfuelaromaticsconcentrationsviaa40CalculatedCetaneIndexminimumisbasedonthecorrelationbetweenTestMethodD976andaromaticsconcentration.TestMethodD4737isthepreferredmethodasestimatorofcetanenumber.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:4P.;A4
【正文语种】: