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【英文标准名称】:Methodsfortheanalysisofmagnesiumandmagnesiumalloys-Determinationofsiliconinmagnesiumandmagnesiumalloys(photometricmethod)
【原文标准名称】:镁和镁合金分析方法.第11部分:硅含量测定(光度测量法)
【标准号】:BS3907-11-1970
【标准状态】:现行
【国别】:英国
【发布日期】:1970-03-20
【实施或试行日期】:1970-03-20
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:校准;光度测量法(化学分析);矽;硅;镁合金;分光光度法;含量测定;镁;化学分析和试验
【英文主题词】:Chemicalanalysisandtesting;Determinationofcontent;Magnesium;Magnesiumalloys;Molybdosilicates;Silicon;Spectrophotometry
【摘要】:Siliconcontentsbetween0.01percentand0.6percent.Reagents,samplingmethods,testprocedure.
【中国标准分类号】:H12
【国际标准分类号】:77_120_20
【页数】:8P.;A4
【正文语种】:英语


【英文标准名称】:ElectromagneticCompatibilityLimits–RecommendedPractice
【原文标准名称】:电磁兼容性限值.推荐规程
【标准号】:ANSIC63.12-1999
【标准状态】:现行
【国别】:美国
【发布日期】:1999-12-14
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:IEEE(ASCC63)
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;定义;电磁兼容性;电磁场;电磁干扰;测量仪器;噪声功率;辐射释放;电信
【英文主题词】:Definition;Definitions;Electromagneticcompatibility;Electromagneticfields;Electromagneticinterferences;Measuringinstruments;Noisepower;Radiatedemissions;Telecommunications
【摘要】:Overtheyearsmanyelectromagneticcompatibilitymeasurementandcontrolstandardshavebeendeveloped.Manyoftheseareofconcerntoparticuclalarssesofdevicessuchasreceivers,transmitters,incidentalradiationdevices,etcI.nestablishinglimits,itisnecessarytorelatethemeasurementtechniquethatisusedtodeterminecompliancewithagivenlimittothefieldconditionsunderwhichthedevicebeingcontrolledwillactuallyoperate.Thisrecommendedpracticepresentsarationalefordevelopinglimits'andrecommendssetsoflimitsthatarerepresentativeofcurrentpractice.Theselimitsmaybeadjustedinparticularapplicationsascircumstancesdictate.Aspartofthedevelopmentoflimits,thefollowingparametersshobuelcdonsidered:a)Thegeneralpropertiesofbothman-madeandnaturalenvironmentalelectromagneticnoise(disturbances)2b)Anunderstandingofthedevicescommonlyusedformeasurementofsuchdisturbancesandtheirproperties,whichwillassistthepractitionerinselectingsuchequipmentsandassociatedmeasurementtechniquesfortheparticularapplicationc)Therationalethatcanbeusedinselectingaconsistentseotflimitsforemissionandimmunity(susceptibility),subjecttovariousenvironmentalconstraints(goodengineeringpractice)Thesepracticesareintendedtobeapplicabletoindividualequipmentsaswellassystemosfvarioussizesand,ifproperlyapplied,willprovideguidanfcoerobtainingbothintrasystemandintersystemcompatibility.Thisrecommendedpracticeisorganizedasfollows:Clause2referencesinstrumentationandmeasurementmethods;Clause3containsalistofdefinitions;Clause4describesenvironmentalradionoise;Clause5describestheselectionofmeasurementparameters;Claus6ediscusseslimitsetting;andAnnexisAabibliography.
【中国标准分类号】:L06
【国际标准分类号】:33_100_01
【页数】:29P.;A4
【正文语种】:英语