ISO 1306-1975 橡胶配方配合剂.炭黑.(粒状).流点浓度的测定

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【英文标准名称】:Rubbercompoundingingredients;Carbonblack(pelletized);Determinationofpourdensity
【原文标准名称】:橡胶配方配合剂.炭黑.(粒状).流点浓度的测定
【标准号】:ISO1306-1975
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:


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【英文标准名称】:StandardTestMethod(AnalyticalProcedure)forDeterminingHydraulicPropertiesofaConfinedAquiferandaLeakyConfiningBedwithNegligibleStoragebytheHantush-JacobMethod
【原文标准名称】:用Hantash-Jacob方法测定具有微量存储的越流性隔水层和封闭含水层水压特性的标准试验方法
【标准号】:ASTMD6029-1996(2010)e1
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【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】:D18.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aquifers;aquifertests;confinedaquifers;confiningbeds;controlwells;groundwater;hydraulicproperties;leakance;leakyaquifers;observationwells;storagecoefficient;transmissivity;Aquifers;Confinedaquifers;Controlwells;Ground
【摘要】:Assumptions:Thecontrolwelldischargesataconstantrate,Q.Thecontrolwellisofinfinitesimaldiameterandfullypenetratestheaquifer.Theaquiferishomogeneous,isotropic,andareallyextensive.Theaquiferremainssaturated(thatis,waterleveldoesnotdeclinebelowthetopoftheaquifer).Theaquiferisoverlain,orunderlain,everywherebyaconfiningbedhavingauniformhydraulicconductivityandthickness.Itisassumedthatthereisnochangeofwaterstorageinthisconfiningbedandthatthehydraulicgradientacrossthisbedchangesinstantaneouslywithachangeinheadintheaquifer.Thisconfiningbedisboundedonthedistalsidebyauniformheadsourcewheretheheaddoesnotchangewithtime.Theotherconfiningbedisimpermeable.Leakageintotheaquiferisverticalandproportionaltothedrawdown,andflowintheaquiferisstrictlyhorizontal.Flowintheaquiferistwo-dimensionalandradialinthehorizontalplane.ThegeometryofthewellandaquifersystemisshowninFig.1.1.1Thistestmethodcoversananalyticalprocedurefordeterminingthetransmissivityandstoragecoefficientofaconfinedaquiferandtheleakancevalueofanoverlyingorunderlyingconfiningbedforthecasewherethereisnegligiblechangeofwaterinstorageinaconfiningbed.Thistestmethodisusedtoanalyzewater-levelorheaddatacollectedfromoneormoreobservationwellsorpiezometersduringthepumpingofwaterfromacontrolwellataconstantrate.Withappropriatechangesinsign,thistestmethodalsocanbeusedtoanalyzetheeffectsofinjectingwaterintoacontrolwellataconstantrate.1.2ThisanalyticalprocedureisusedinconjunctionwithTestMethodD4050.1.3Limitations8212;ThevaliduseoftheHantush-JacobmethodislimitedtothedeterminationofhydraulicpropertiesforaquifersinhydrogeologicsettingswithreasonablecorrespondencetotheassumptionsoftheTheisnonequilibriummethod(TestMethodD4106)withtheexceptionthatinthiscasetheaquiferisoverlain,orunderlain,everywherebyaconfiningbedhavingauniformhydraulicconductivityandthickness,andinwhichthegainorlossofwaterinstorageisassumedtobenegligible,andthatbed,inturn,isboundedonthedistalsidebyazoneinwhichtheheadremainsconstant.Thehydraulicconductivityoftheotherbedconfiningtheaquiferissosmallthatitisassumedtobeimpermeable(seeFig.1).1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunits,whichareprovidedforinformationonlyandarenotconsideredstandard.1.4.1Theconvertedinch-poundunitsusethegravitationalsystemofunits.Inthissystem,thepound(lbf)representsaunitofforce(weight),whiletheunitformassisslugs.Theconvertedslugunitisnotgiven,unlessdynamic(F=ma)calculationsareinvolved.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.FIG.1CrossSectionThroughaDischargingWellinaLeakyAquifer(fromReed(1)).4TheConfi......
【中国标准分类号】:P13
【国际标准分类号】:13_060_10
【页数】:11P.;A4
【正文语种】:英语


【英文标准名称】:Radio-frequencyconnectors-Part2:Sectionalspecification-Radiofrequencycoaxialconnectorsoftype9,52(IEC61169-2:2007);GermanversionEN61169-2:2007
【原文标准名称】:射频连接器.第2部分:分规范.9.52型射频同轴连接器
【标准号】:EN61169-2-2007
【标准状态】:现行
【国别】:
【发布日期】:2007-11
【实施或试行日期】:2007-11-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:认可;空白格式;同轴;同轴连接器;尺寸选定;尺寸;电插头;电气工程;内孔连接器;量规;高频;检验;接口;接口(数据处理);插头连接器;作标记;质量;质量评估;射频连接器;射频插头;额定值;分规范;规范;规范(验收);测试
【英文主题词】:Approval;Blankforms;Coaxial;Coaxialconnectors;Dimensioning;Dimensions;Electricplugs;Electricalengineering;Femaleconnectors;Gauges;Highfrequencies;Inspection;Interfaces;Interfaces(dataprocessing);Maleconnectors;Marking;Quality;Qualityassessment;Radiofrequencyconnectors;Radio-frequencyplugs;Ratings;Sectionalspecification;Specification;Specification(approval);Testing
【摘要】:
【中国标准分类号】:L23
【国际标准分类号】:33_120_30
【页数】:24P.;A4
【正文语种】:英语