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ASTM D3825-1990(2005) 快速气泡法测定动态表面张力的标准试验方法

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【英文标准名称】:StandardTestMethodforDynamicSurfaceTensionbytheFast-BubbleTechnique
【原文标准名称】:快速气泡法测定动态表面张力的标准试验方法
【标准号】:ASTMD3825-1990(2005)
【标准状态】:现行
【国别】:
【发布日期】:1990
【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】:D02.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:石油产品;润滑剂;表面张力;试验
【英文主题词】:dynamicsurfacetension;tension(tensile)properties/tests;surfacetension
【摘要】:Whilethistestmethodcanbeappliedtopureliquids,itisespeciallydesignedforusewithmixturesinwhichoneormorecomponentsmigratetothesurface.Dataofthistypeareneededforthedesignofequipmentforprocessingmixedliquids,suchasindistillationtowers.1.1Thistestmethodcoversthedeterminationofthespecificfreeenergyofaliquid-gassurfaceashorttimeafterformationofthesurface.1.2Itisapplicabletoliquidswithvaporpressuresupto30.0kPa(225torr)andkinematicviscositiesupto4.0mm/s(4.0cSt)atthetesttemperature.Higherviscositieshavenotyetbeeninvestigated.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoconsultandestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,see7.3,7.4,and7.5.
【中国标准分类号】:Z16
【国际标准分类号】:75_100
【页数】:5P.;A4
【正文语种】:


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【英文标准名称】:Electriccables-Lowvoltageenergycablesofratedvoltagesuptoandincluding450/750V(U/U)-Part2-72:Cablesforgeneralapplications-Flatdivisiblecables(cords)withthermoplasticPVCinsulation;GermanversionEN50525-2-72:2011
【原文标准名称】:电缆.额定电压为450/750V(U/U)及以下的低压能源电缆.第2-72部分:一般应用电缆.热塑性PVC绝缘平面分割电缆(多芯).德文版EN50525-2-72-2011
【标准号】:DINEN50525-2-72-2012
【标准状态】:现行
【国别】:德国
【发布日期】:2012-01
【实施或试行日期】:2012-01-01
【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】:
【英文主题词】:Cables;Corearrangement;Dimensions;Elastomers;Electriccables;Electricalcords;Electricalengineering;Electricalinsulatingmaterials;Electricaltesting;Flexible;Flexiblecables;Hoseassemblies;Insulatedcables;Insulatedcords;Insulatingcoverings;Insulations;Lowvoltage;Plasticinsulations;Polyvinylchloride;Polyvinylchlorideinsulation;Powerlines;PVCinsulations;Ratedvoltage;Testing;Twinlines;Types
【摘要】:
【中国标准分类号】:K13
【国际标准分类号】:29_035_20;29_060_20
【页数】:12P;A4
【正文语种】:德语


【英文标准名称】:StandardPracticeforStatisticalTreatmentofThermoanalyticalData
【原文标准名称】:热分析数据的统计处理的标准操作规程
【标准号】:ASTME1970-2006
【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】:E37.10
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:分析;均值;精密度;质量;斜度;标准差;统计学;热分析
【英文主题词】:intercept;mean;precision;relativestandarddeviation;slope;standarddeviation
【摘要】:Thestandarddeviation,oroneofitsderivatives,suchasrelativestandarddeviationorpooledstandarddeviation,derivedfromthispractice,providesanestimateofprecisioninameasuredvalue.Suchresultsareordinarilyexpressedasthemeanvaluex00B1;thestandarddeviation,thatis,Xx00B1;s.Ifthemeasuredvaluesare,inthestatisticalsense,x201C;normallyx201D;distributedabouttheirmean,thenthemeaningofthestandarddeviationisthatthereisa67%chance,thatis2in3,thatagivenvaluewillliewithintherangeofx00B1;onestandarddeviationofthemeanvalue.Similarly,thereisa95%chance,thatis19in20,thatagivenvaluewillliewithintherangeofx00B1;twostandarddeviationsofthemean.Thetwostandarddeviationrangeissometimesusedasatestforoutlyingmeasurements.Thecalculationofprecisionintheslopeandinterceptofaline,derivedfromexperimentaldata,commonlyisrequiredinthedeterminationofkineticparameters,vaporpressureorenthalpyofvaporization.Thispracticedescribeshowtoobtaintheseandotherstatisticallyderivedvaluesassociatedwithmeasurementsbythermalanalysis.1.1Thispracticedetailsthestatisticaldatatreatmentusedinsomethermalanalysismethods.1.2Themethoddescribesthecommonlyencounteredstatisticaltoolsofthemean,standardderivation,relativestandarddeviation,pooledstandarddeviation,pooledrelativestandarddeviationandthebestfittoastraightline,allcalculationsencounteredinthermalanalysismethods.1.3Somethermalanalysismethodsderivetheanalyticalvaluefromtheslopeorinterceptofabestfitstraightlineassignedtothreeormoresetsofdatapairs.Suchmethodsmayrequireanestimationoftheprecisioninthedeterminedslopeorintercept.Thedeterminationofthisprecisionisnotacommonstatisticaltool.Thispracticedetailstheprocessforobtainingsuchinformationaboutprecision.1.4SIunitsarethestandard.1.5TherearenoISOmethodsequivalenttothispractice.
【中国标准分类号】:A54
【国际标准分类号】:03_120_30;17_200_10
【页数】:4P.;A4
【正文语种】: