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【英文标准名称】:StandardClassificationforAllowance,ContingencyandReserveSumsinBuildingConstructionEstimating
【原文标准名称】:建筑结构估算中容许偏差、偶然事故和储备量的标准分类
【标准号】:ASTME2168-2006
【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】:E06.81
【标准类型】:(Classification)
【标准水平】:()
【中文主题词】:容差;分类;建筑;结构计算;材料试验;项目规划;储备量;总数
【英文主题词】:allowance,contingency,reserve,costrisk;buildingeconomics,classification,constructionestimating;costestimating;costplanning;costcontrol;UNIFORMATII,budgeting
【摘要】:1.1Thisclassificationestablishesaclassificationforallowance,contingency,andreservesumsusedinconstruction,project,andprogramestimating.1.2Thisclassificationappliestoallconstructionwork.1.3Thisclassificationisno
【中国标准分类号】:P20
【国际标准分类号】:91_010_20
【页数】:4P.;A4
【正文语种】:


【英文标准名称】:Opticalamplifiers-Testmethods-Part1-3:Powerandgainparameters-Opticalpowermetermethod
【原文标准名称】:光学放大器.试验方法.第1-3部分:光功率参数和增益参数.光功率计法
【标准号】:IEC61290-1-3-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-11
【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】:放大器;基本规范;电气工程;光纤;光学纤维;光波导;光学;输出测量器;参数;性能;电功率测量;稀土金属;规范;光谱分析;试验
【英文主题词】:Amplifiers;Basicspecification;Electricalengineering;Fibreoptics;Opticaldevices;Opticalfibres;Opticalwaveguides;Optics;Outputmeters;Parameters;Performance;Powermeasurement(electric);Rareearthmetals;Specification;Spectralanalysis;Testset-ups;Testing
【摘要】:ThisInternationalStandardappliestoallcommerciallyavailableopticalamplifiers(OA)andopticallyamplifiedsubsystems.ItappliestoOAusingopticallypumpedfibres(OFAbasedoneitherrare-earthdopedfibresorontheRamaneffect),semiconductors(SOA),andwaveguides(POWA).NOTETheapplicabilityofthetestmethodsdescribedinthepresentstandardtodistributedRamanamplifiersisforfurtherstudy.Theobjectofthisstandardistoestablishuniformrequirementsforaccurateandreliablemeasurements,bymeansoftheopticalpowermetertestmethod,ofthefollowingOAparameters,asdefinedinClause3ofIEC61291-1:a)nominaloutputsignalpower;b)gain;c)reversegain;d)maximumgain;e)polarization-dependentgain;f)large-signaloutputstability;g)saturationoutputpower;h)maximuminputsignalpower;i)maximumoutputsignalpower;j)inputpowerrange;k)outputpowerrange;I)maximumtotaloutputpower.Inadditionthistestmethodprovidesameansformeasuringthefollowingparameters:-maximumgainwavelength;gainwavelengthband.NOTEAllnumericalvaluesfollowedby(t)aresuggestedvaluesforwhichthemeasurementisassured.Othervaluesmaybeacceptablebutshouldbeverified.Theobjectofthisstandardisspecificallydirectedtosingle-channelamplifiers.Formultichannelamplifiers,oneshouldrefertotheIEC61290-10series2.
【中国标准分类号】:L50
【国际标准分类号】:33_180_30
【页数】:46P.;A4
【正文语种】:英语