NF S31-090-1983 测定家用电器及类似物品空气传播噪音试验规则.第1部分:一般规则
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【英文标准名称】:TESTCODEFORTHEDETERMINATIONOFAIRBORNEACOUSTICALNOISEEMITTEDBYHOUSEHOLDANDSIMILARELECTRICALAPPLIANCES.PART1:GENERALREQUIREMENTS.
【原文标准名称】:测定家用电器及类似物品空气传播噪音试验规则.第1部分:一般规则
【标准号】:NFS31-090-1983
【标准状态】:作废
【国别】:法国
【发布日期】:1983-06
【实施或试行日期】:1983-05-30
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:数学计算;试验设备;试验条件;测量;消费者组织;情报机构;用户信息;技术通报;空气(载)声;声功率;音量;外壳;技术文献;家用电器;声学测量;测量技术;噪声;计算;家用器具;家用设备;声压;声强
【英文主题词】:
【摘要】:
【中国标准分类号】:Z32
【国际标准分类号】:
【页数】:30P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforCentrifugeMoistureEquivalentofSoils
【原文标准名称】:土壤离心湿度当量的标准试验方法
【标准号】:ASTMD425-1988(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1988
【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】:D18.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:centrifugemoistureequivalent;specificretention;specificyield,storagecapacity;waterholdingcapacity;Centrifugemoistureequivalent;Soil;Soil-moistureanalysis;Specificretention/yield;Storage--soil/rock/relatedmaterials;Wateranalysis;Wat
【摘要】:Notallwatercontainedinasaturatedsoilcanberemovedbygravitydrainage.Theamountofwaterretainedaftergravitydrainageisusuallyexpressedaswaterholdingcapacityorspecificretention.Itvarieswithtime,andwiththeparticle-sizedistributionandplasticityofthesoil(ingeneral,increasinginvaluewithincreasingplasticityindex).Ingeneral,thecentrifugemoistureequivalentisbasedonthetheoryofapplyingacentrifugalforcegreatenoughtoreducethecapillaryfringezoneenoughthatitcanbeignoredwithoutintroducingmucherror,eveninsmallspecimens,andyetnotsogreatastowithdrawalargeproportionofthewaterthatisheldsecurelyabovethecapillaryfringe.Forexample,ifasoilwillholdwater100mmbycapillarityactingagainstgravity,thesoilwilltheoreticallybeabletoholdthewateronly0.1mmagainstacentrifugalforcethatis1000timesgreaterthantheforceofgravity.Ithasbeendeterminedthatforatleastmedium-texturedsoils(sandytosiltyparticle-sizedistribution)thecentrifugemoistureequivalentapproximatesthewaterholdingcapacityandwhencombinedwiththebulkdensitycanbeusedtocalculateanapproximatespecificretentionandspecificyield.Thesepropertieswhencombinedwithporositycanbeusedtoestimateaquiferstoragecoefficient.1.1Thistestmethodcoversthedeterminationofthemoistureequivalentofsoilinthelaboratorybymeansofacentrifugetechnique.1.2Thistestmethodislimitedtodisturbedspecimensofcoarse-grainedsoilshavingfinesoflowplasticitysuchasSP,SW,SC-SM,orSMsoils.Thetestislimitedtosoilspassingthe2.00-mmsieveorthatfractionofasoilpassinga2.00-mmsieve.Note18212;TestMethodD3152orTestMethodD2325shouldbeusedtoevaluatethecapillary-moisturerelationsoffine-grainedsoilsandcoarse-grainedsoilshavingfinesofmediumtohighplasticity,undisturbedsoils,andsoilsatspecificdesiredunitsweights.1.3Thetestmethodistemperature-dependent,andconsistentcomparableresultscanbeobtainedonlyifthetestsareperformedunderaconstant-temperaturecondition.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B11
【国际标准分类号】:93_020
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:Carbonaceousmaterialsusedintheproductionofaluminium-Calcinedcoke-DeterminationofcrystallitesizeofcalcinedpetroleumcokebyX-raydiffraction
【原文标准名称】:铝生产中使用的碳素材料.煅烧焦炭.用X-射线衍射法测定煅烧石油焦的晶体粒度
【标准号】:ISO20203-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-10-01
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC226
【标准类型】:()
【标准水平】:()
【中文主题词】:铝;煅烧;碳;碳素材料;焦炭;定义;测定;电极;石墨材料;生产;X射线分析;X射线衍射分析
【英文主题词】:Aluminium;Calcined;Carbon;Carbonmaterials;Coke;Definition;Definitions;Determination;Electrodes;Graphitematerials;Production;X-rayanalysis;X-raydiffractionanalysis
【摘要】:ThisInternationalStandarddescribesatestmethodforthedeterminationofthemeancrystalliteheightofarepresentative,pulverizedsampleofcalcinedpetroleumcokebyinterpretationofanX-raydiffractionpatternproducedthroughconventionalX-rayscanningtechniques.Itappliestocarbonaceousmaterialsusedintheproductionofaluminium.Calcinedpetroleumcokecontainscrystallitesofdifferentheights.ThistestmethodcoversthedeterminationoftheaverageheightofallcrystallitesinthesamplebyempiricalinterpretationoftheX-raydiffractionpattern.Thecrystallitediameter(Lα)isnotdeterminedbythistestmethod.
【中国标准分类号】:Q52
【国际标准分类号】:77_120_10
【页数】:12P.;A4
【正文语种】:英语
