BS ISO/IEC 8802-3-1997 信息技术.系统之间的电信和信息交换.局域网和都市网.特殊要求.采用碰撞检测(CSMA/CD)法的载波传感多通道和物理层规范
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【英文标准名称】:Informationtechnology.Telecommunicationsandinformationexchangebetweensystems.Localandmetropolitanareanetworks.Specificrequirements.Carriersensemultipleaccesswithcollisiondetection(CSMA/CD)accessmethodandphysicallayerspecificati
【原文标准名称】:信息技术.系统之间的电信和信息交换.局域网和都市网.特殊要求.采用碰撞检测(CSMA/CD)法的载波传感多通道和物理层规范
【标准号】:BSISO/IEC8802-3-1997
【标准状态】:作废
【国别】:英国
【发布日期】:1997-05-15
【实施或试行日期】:1997-05-15
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电气安全;频带宽度;信号;纤维光学;信息交流;计算机网络;局域网;信号电平;数据链路层(OSI);物理层(OSI);网络层(OSI);数据处理;性能;城域网;文电;媒体通路控制;接口(数据加工);电信传输法;电压;数据传送;数据传输方法;带有检测冲突的载波侦听多路存取网络;数据传输
【英文主题词】:
【摘要】:DealswiththePhysicalandDataLinklayersasdefinedbytheISO/IECOpenSystemsInterconnectionBasicReferenceModel(ISO/IEC7498-1:1994).Theaccessstandardsdefinefivetypesofmediumaccesstechnologiesandassociatedphysicalmedia,eachappropriateforparticularapplicationsorsystemobjectives.
【中国标准分类号】:M11
【国际标准分类号】:35_110
【页数】:556P;A4
【正文语种】:英语
【英文标准名称】:HydraulicTurbinesandPump-TurbinesConsolidationofASMEPTC18-1992andASMEPTC18.1-1978
【原文标准名称】:液力涡轮机和涡轮泵
【标准号】:ASMEPTC18-2002
【标准状态】:作废
【国别】:美国
【发布日期】:2002-01-01
【实施或试行日期】:
【发布单位】:美国机械工程师协会(US-ASME)
【起草单位】:ASME
【标准类型】:()
【标准水平】:()
【中文主题词】:测量方法;液力发动机;压力测量(流体);液压设备;流量测量;规格试验;涡轮机;试验
【英文主题词】:Flowmeasurements;Hydraulicequipment;Hydraulicmotors;Methodsformeasuring;Pressuremeasurement(fluids);Ratingtests;Testing;Turbines
【摘要】:ThisCodedefinesproceduresforfieldperformanceandacceptancetestingofhydraulicturbinesandpump-turbinesoperatingwithwaterineithertheturbineorpumpmode.ThisCodeappliestoallsizesandtypesofhydraulicturbinesorpump-turbines.Itdefinesmethodsforascertainingperformancebymeasuringflowrate(discharge),head,andpower,fromwhichefficiencymaybedetermined.Requirementsareincludedforpretestarrangements,typesofinstrumentation,methodsofmeasurement,testingprocedures,methodsofcalculation,andcontentsoftestreports.ThisCodecontainsmandatorytestrequirementsandvariousmethodsofmeasurement.WheremultiplemethodsofmeasurementandproceduresarepermittedbytheCode,priorwrittenagreementastotheselectedmethodsandproceduresisrequired.Thetestproceduresspecifiedhereinandthelimitationsplacedonmeasurementmethodsandinstrumentationarecapableofprovidingatotaluncertainty,calculatedinaccordancewiththeproceduresofPTC19.1andofthisCode,ofnotmorethan:(a)Power?.2%,(b)FlowRate?.5%,and(c)Efficiency?.0%.Wherefavorablemeasurementconditionsexistandbestmethodscanbeused,smalleruncertaintiesshouldresult.AnytestwithuncertaintiesgreaterthantheaboveshallnotqualifyasanASMECodetest.ThisCodecontainsrecommendedproceduresforindextestinganddescribesthepurposesforwhichindextestsmaybeused.ThisCodealsocontainsTablesfor(a)Accelerationofgravityasafunctionoflatitudeandaltitude;(b)Vaporpressureofdistilledwaterasafunctionoflatitudeandaltitude;(c)Densityofwateratagiventemperatureandpressure;(e)Densityofdryair;and(f)Densityofmercury.
【中国标准分类号】:J99
【国际标准分类号】:27_140
【页数】:88P.;A4
【正文语种】:英语
【英文标准名称】:Designandmanufactureofsitebuilt,vertical,cylindrical,flat-bottomedsteeltanksforthestorageofrefrigerated,liquefiedgaseswithoperatingtemperaturesbetween0°Cand-165°C-Part2:Metalliccomponents;EnglishversionofDINEN14620-2:
【原文标准名称】:工作温度为0℃～-165℃液态气体冷冻储存用垂直圆柱平底钢罐现场制作的设计和生产.第2部分:金属构件.英文版本DINEN14620-2-2006-12
【标准号】:DINEN14620-2-2006
【标准状态】:现行
【国别】:德国
【发布日期】:2006-12
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:轴承;交付使用;组件;低温学的;圆柱形;定义;定义(术语);设计;外壳;平底;气体;材料;金属护套;金属材料;金属;操作;压力容器;生产;薄板厚度;规范(验收);固定的;钢质槽罐;存储;结构金属加工;槽罐设备;水箱(容器);试验;焊接工艺;焊缝
【英文主题词】:Bearings;Commissioning;Components;Cryogenic;Cylindricalshape;Definition;Definitions;Design;Enclosures;Flatbottoms;Gases;Materials;Metalsheaths;Metallicmaterials;Metals;Operation;Pressurevessels;Production;Sheetthickness;Specification(approval);Stationary;Steeltanks;Storage;Structuralmetalwork;Tankinstallations;Tanks(containers);Testing;Weldingprocesses;Welds
【摘要】:ThisEuropeanStandardspecifiesgeneralrequirementsforthematerials,design,constructionandinstallationofthemetalliccomponentsofrefrigeratedliquefiedgasstoragetanks.ThisEuropeanStandarddealswiththedesignandmanufactureofsitebuilt,vertical,cylindrical,flat-bottomedsteeltanksforthestorageofrefrigerated,liquefiedgaseswithoperatingtemperaturesbetween0°Cand-165°C.
【中国标准分类号】:A82
【国际标准分类号】:23_020_10
【页数】:59P.;A4
【正文语种】:德语
