ASTM D3825-2009 用快速发泡技术测定动态表面张力的试验方法

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【英文标准名称】:StandardTestMethodforDynamicSurfaceTensionbytheFast-BubbleTechnique
【原文标准名称】:用快速发泡技术测定动态表面张力的试验方法
【标准号】:ASTMD3825-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:
【英文主题词】:dynamicsurfacetension;tension(tensile)properties/tests;surfacetension;Bubbletest;Dynamicsurfacetension;Fastbubbletechnique;LPG(liquefiedpetroleumgases);Petroleumproducts(liquid);Specificfreeenergy;Surfaceanalysis;Tensileprope
【摘要】:Whilethistestmethodcanbeappliedtopureliquids,itisespeciallydesignedforusewithmixturesinwhichoneormorecomponentsmigratetothesurface.Dataofthistypeareneededforthedesignofequipmentforprocessingmixedliquids,suchasindistillationtowers.1.1Thistestmethodcoversthedeterminationofthespecificfreeenergyofaliquid-gassurfaceashorttimeafterformationofthesurface.1.2Itisapplicabletoliquidswithvaporpressuresupto30.0kPa(225torr)andkinematicviscositiesupto4.0mm/s(4.0cSt)atthetesttemperature.Higherviscositieshavenotyetbeeninvestigated.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Warningx2014;MercuryhasbeendesignatedbyEPAandmanystateagenciesasahazardousmaterialthatcancausecentralnervoussystem,kidney,andliverdamage.Mercury,oritsvapor,maybehazardoustohealthandcorrosivetomaterials.Cautionshouldbetakenwhenhandlingmercuryandmercury-containingproducts.SeetheapplicableproductMaterialSafetyDataSheet(MSDS)fordetailsandEPAx2019;swebsite(http://www.epa.gov/mercury/faq.htm)foradditionalinformation.Usersshouldbeawarethatsellingmercuryormercury-containingproducts,orboth,inyourstatemaybeprohibitedbystatelaw.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoconsultandestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificwarningstatements,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】:6P.;A4
【正文语种】:英语


【英文标准名称】:Methodsformeasuringtransmissionperformanceofanaloganddigitaltelephonesets,handsets,andheadsets
【原文标准名称】:模拟和数字电话机,话筒和听筒传输性能测量的方法
【标准号】:IEEE269-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(US-IEEE)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:模拟信号;数据传送;定义;数字数据;话筒;头戴送受话器;性能要求;语音传输;电话设备;电话机组;电话系统;电话技术;电话机;传输;传输性能
【英文主题词】:Analoguesignals;Datatransfer;Definitions;Digitaldata;Handsets;Headphones;Performancerequirements;Speechtransmission;Telephoneequipment;Telephonesets;Telephonesystems;Telephonetechnics;Telephones;Transmission;Transmissionperformance
【摘要】:
【中国标准分类号】:M40
【国际标准分类号】:33_050_10
【页数】:173P;A4
【正文语种】:英语


MIL-C-44072C (NOTICE 1), MILITARY SPECIFICATION: COOKIES, OATMEAL; AND BROWNIES; CHOCOLATE COVERED (31 MAR 1997) [NO S/S DOCUMENT]., MIL-C-44072C, is inactive for new design and is no longer used, except for replacement purposes.