【英文标准名称】:Testmethodsforelectro-slagremeltingfurnaces
【原文标准名称】:电渣重熔炉试验方法
【标准号】:BS7688-1993
【标准状态】:作废
【国别】:英国
【发布日期】:1993-09-15
【实施或试行日期】:1993-09-15
【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】:电气设备;试验条件;冶金炉;温升;电阻炉;电气试验;炉;额定电流;额定功率;性能试验;电炉;电路;额定电压;电压测量;加热设备;电气设备;定义;功率因数
【英文主题词】:Arcfurnaces;Definition;Definitions;Electricfurnaces;Electricalengineering;Electroheatinginstallations;Furnaces;Industrial;Industries;Inspection;Measurement;Remeltingfurnaces;Testing
【摘要】:Providesaconsistentmethodoftestingremelting,refiningmetalsthroughdirectresistanceheatingofconductiveslag.
【中国标准分类号】:K61
【国际标准分类号】:25_180_10
【页数】:16P.;A4
【正文语种】:英语


【英文标准名称】:Sequentialsamplingplansforinspectionbyvariablesforpercentnonconforming(knownstandarddeviation)
【原文标准名称】:用不合格品率的变量检验序贯抽样方案(适用于标准差已知的情形)
【标准号】:ISO8423-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-09
【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/TC69
【标准类型】:()
【标准水平】:()
【中文主题词】:特性;定义;误差检测;检验;测量;测量技术;质量控制;样品试验;取样;抽样方法;抽样表;统计方法分析;统计学
【英文主题词】:Characteristics;Definitions;Errordetection;Inspection;Measurement;Measuringtechniques;Qualitycontrol;Sampletests;Sampling;Samplingmethods;Samplingtables;Statisticalmethodsofanalysis;Statistics
【摘要】:ThisInternationalStandardspecifiessequentialsamplingplansandproceduresforinspectionbyvariablesofdiscreteitems.Theplansareindexedintermsofproducersriskpointandtheconsumer'sriskpoint.Therefore,theyaresuitablenotonlyforthepurposesofacceptancesampling,butforthemoregeneralpurposeofthetestingofsimplestatisticalhypothesesforproportions.ThepurposeofthisInternationalStandardistoprovideproceduresforthesequentialassessmentofinspectionresultsthatmaybeusedtoinducethesuppliertosupplylotsofaqualityhavingahighprobabilityofacceptance.Atthesametime,theconsumerisprotectedbyaprescribedupperlimittotheprobabilityofacceptingalot(orprocess)ofpoorquality.ThisInternationalStandardisprimarilydesignedforuseunderthefollowingconditions:a)wheretheinspectionprocedureistobeappliedtoacontinuingseriesoflotsofdiscreteproductsallsuppliedbyoneproducerusingoneproductionprocess.Insuchacase,samplingofparticularlotsisequivalenttothesamplingoftheprocess.Iftherearedifferentproducersorproductionprocesses,thisInternationalStandardshallbeappliedtoeachoneseparately;b)whereonlyasinglequalitycharacteristicxoftheseproductsistakenintoconsideration,whichmustbemeasurableonacontinuousscale;c)wherethemeasurementerrorisnegligible(i.e.withastandarddeviationnomorethan10%oftheprocessstandarddeviation);d)whereproductionisstable(understatisticalcontrol)andthequalitycharacteristicxhasaknownstandarddeviation,andisdistributedaccordingtoanormaldistributionoracloseapproximationtothenormaldistribution;e)whereacontractorstandarddefinesanupperspecificationlimitU,alowerspecificationlimitL,orboth;anitemisqualifiedasconformingifandonlyifitsmeasuredqualitycharacteristic,x,satisfiestheappropriateoneofthefollowinginequalities:1)x≤U(i.e.theupperspecificationlimitisnotviolated);2)x≥L(i.e.thelowerspecificationlimitisnotviolated);3)x≤Uandx≥L(i.e.neithertheuppernorthelowerspecificationlimitisviolated).Inequalities1)and2)arecalledcaseswitha"singlespecificationlimit",and3)isthecasewith"doublespecificationlimits".
【中国标准分类号】:A20
【国际标准分类号】:03_120_30
【页数】:32P;A4
【正文语种】:英语