IEC/TR 60828-1988 使用IEC60603-2连接器的微型信息处理机系统用管脚分配器
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【英文标准名称】:PinallocationsformicroprocessorsystemsusingtheIEC60603-2connector.
【原文标准名称】:使用IEC60603-2连接器的微型信息处理机系统用管脚分配器
【标准号】:IEC/TR60828-1988
【标准状态】:现行
【国别】:国际
【发布日期】:1988
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:ISO/IEC/JTC1/SC26
【标准类型】:()
【标准水平】:()
【中文主题词】:插头;半导体器件;电子设备及元件;电连接器;电气工程;配电;电子工程;插脚;微处理机
【英文主题词】:semiconductordevices;distribution;electricalengineering;microprocessors;electronicequipmentandcomponents;electricconnectors;electronicengineering;pins;electricplugs
【摘要】:Thisreportdescribestheminimumnumberofd.c.groundterminalstobeallocatedtoeachIEC603-2"connectorusedinmicroprocessor-basedsystems.ThisreportalsomakesrecommendationsanddescribesrestrictionsfortheallocationofpowerandgroundconnectionswhenusingtheIEC603-2connectorinmicroprocessor-basedsystems.Thisreportappliestoboththeboardsandbackplaneconnectionsinmicroprocessorsystems.Note,-Thewords"pin"andffterminalffareusedinterchangeably.
【中国标准分类号】:L62
【国际标准分类号】:2370;1850
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforDeterminingtheWorkabilityofAsphaltColdMixPatchingMaterial
【原文标准名称】:沥青冷混合修补材料的实用性的测定的标准试验方法
【标准号】:ASTMD6704-2001
【标准状态】:现行
【国别】:
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D04.27
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:workabilityofasphalt;coldmix;roadwaypatchingoperations
【摘要】:Thistestmethodmaybeusedtogenerateinformationconcerningthepotentialcharacteristicsofhandling,placing,compaction,andperformanceofanasphaltcoldmix.Workabilityisoneofthemainfactorsthatinfluencesthesuitabilityandultimatelytheperformanceofasphaltcoldmixsuitabilityforuseasaroadwaypatchingmaterial.Thistestmethodisapplicabletoasphaltcoldmixesmanufacturedwithmodifiedorunmodifiedasphaltemulsions,cutbackasphalts,orcombinationsthereof.1.1Thistestmethodprovidesaprocedurefordeterminationoftheworkabilityofasphaltcoldmixpatchingmaterials.1.2Thistestmethodisapplicabletoasphaltcoldmixpatchingmaterialsthatwillbestockpiledorpackagedincontainers,subjectedtodifferentclimaticconditions,andlaterusedforroadwaypatchingoperations.1.3Precisionandbiasforthistestmethodhasnotbeendetermined,therefore,thistestmethodshouldnotbeusedforpurchasingpurposes.1.4Thisproceduremayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E43
【国际标准分类号】:93_080_20
【页数】:3P.;A4
【正文语种】:
【英文标准名称】:StandardGuideforDevelopmentandUseofaGalvanicSeriesforPredictingGalvanicCorrosionPerformance
【原文标准名称】:预测电流腐蚀特性用电流系列的制定和使用的标准指南
【标准号】:ASTMG82-1998(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【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】:G01.11
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:active;corrosionpotential;galvaniccorrosion;GalvanicSeries;noble;passive;Acceleratedaging/testing--corrosion;Aluminum;Aluminumalloys--corrosiontesting;Austeniticsteel;Brass;Bronze;Cadmiummetals/alloys;Conductanceandconductivity(el
【摘要】:Whentwodissimilarmetalsinelectricalcontactareexposedtoacommonelectrolyte,oneofthemetalscanundergoincreasedcorrosionwhiletheothercanshowdecreasedcorrosion.Thistypeofacceleratedcorrosionisreferredtoasgalvaniccorrosion.Becausegalvaniccorrosioncanoccuratahighrate,itisimportantthatameansbeavailabletoalerttheuserofproductsorequipmentthatinvolvetheuseofdissimilarmetalcombinationsinanelectrolyteofthepossibleeffectsofgalvaniccorrosion.Onemethodthatisusedtopredicttheeffectsofgalvaniccorrosionistodevelopagalvanicseriesbyarrangingalistofthematerialsofinterestinorderofobservedcorrosionpotentialsintheenvironmentandconditionsofinterest.Themetalthatwillsufferincreasedcorrosioninagalvaniccoupleinthatenvironmentcanthenbepredictedfromtherelativepositionofthetwometalsintheseries.TypesofGalvanicSeries:OetypeofGalvanicSeriesliststhemetalsofinterestinorderoftheircorrosionpotentials,startingwiththemostactive(electronegative)andproceedinginordertothemostnoble(electropositive).Thepotentialsthemselves(versusanappropriatereferencehalf-cell)arelistedsothatthepotentialdifferencebetweenmetalsintheseriescanbedetermined.ThistypeofGalvanicSerieshasbeenputingraphicalformasaseriesofbarsdisplayingtherangeofpotentialsexhibitedbythemetallistedoppositeeachbar.SuchaseriesisillustratedinFig.1.Thesecondtypeofgalvanicseriesissimilartothefirstinthatitliststhemetalsofinterestinorderoftheircorrosionpotentials.Theactualpotentialsthemselvesarenotspecified,however.Thus,onlytherelativepositionofmaterialsintheseriesisknownandnotthemagnitudeoftheirpotentialdifference.SuchaseriesisshowninFig.2.UseofaGalvanicSeries:Generally,uponcouplingtwometalsintheGalvanicSeries,themoreactive(electronegative)metalwillhaveatendencytoundergoincreasedcorrosionwhilethemorenoble(electropositive)metalwillhaveatendencytoundergoreducedcorrosion.Usually,thefurtheraparttwometalsareintheseries,andthusthegreaterthepotentialdifferencebetweenthem,thegreateristhedrivingforceforgalvaniccorrosion.Allotherfactorsbeingequal,andsubjecttotheprecautionsinSection5,thisincreaseddrivingforcefrequently,althoughnotalways,resultsinagreaterdegreeofgalvaniccorrosion.Note8212;Darkboxesindicateactivebehaviorofactive-passivealloys.FIG.1GalvanicSeriesofVariousMetalsinFlowingSeawaterat2.4to4.0m/sfor5to15Daysat5to30x00B0;C(RedrawnfromOriginal)(seeFootnote5)ACTIVEEND
Magnesium
(x2212;)
MagnesiumAlloys
x2191;
Zinc
brvbar;
GalvanizedSteel
brvbar;
Aluminum1100
brvbar;
Aluminum6053
brvbar;
Alclad