您的位置: 标准下载 » 协会标准 » ASTM 美国材料与试验协会 »

ASTM D4822-1988(2008) 河水中沉淀物粒度分析方法的选择标准指南(手工方法)

作者:标准资料网 时间:2024-05-10 17:41:32  浏览:9447   来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:StandardGuideforSelectionofMethodsofParticleSizeAnalysisofFluvialSediments(ManualMethods)
【原文标准名称】:河水中沉淀物粒度分析方法的选择标准指南(手工方法)
【标准号】:ASTMD4822-1988(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】:D19.07
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:particlesize;sediment;Particleanalysis--water;Samplingwateranalysisapplications;Sediment;Statisticalmethods--wateranalysis;Wastewatertesting/treatment
【摘要】:Thisguideisgeneralandusefulinhelpingtheusertodetermineanappropriatemanualtestmethodfordeterminingtheparticlesizedistributionoffluvialsediments.Thesuggestedtestmethodsarenotdescribedinthisguide,butreferencesaregivensothattheusermayobtainmoreinformationabouteachtestmethod.Itshouldbenotedthatdifferenttestmethodsmayandoftentimesdoproducedifferentparticlesizedistributionsforthesamesample.Thisisdueinparttothedifferenttestmethodsrequiringnativeordistilledwater,differencesindispersionmethodsused,anddifferencesinwhatthetestmethodismeasuring,thatis,physicalorsedimentationdiameter.1.1Thisguidecoverstheselectionofmethodsfordeterminingthesizedistributionoffluvialsedimentsparticlesintherangegreaterthan0.45x03BC;musingmanualmethods.Manualmethodsaredefinedasthosemethodsthatrequiretheoperatortodosomeactualmeasurementsandcalculations.Anautomatedmethodwouldbeonewhich,afterthesampleispreparedandinsertedintoaninstrument,theinstrument(machine)doesthemeasuringandcalculations,nottheoperator.Notallmanualmethodsarepresentedinthisguide.However,whereavailable,atleasttwomethodsforeachparticlesizerangearegiven.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:
【页数】:3P.;A4
【正文语种】:英语


下载地址: 点击此处下载
【英文标准名称】:Applicationguidefortheselectionoffuse-linksofhigh-voltagefusesfortransformercircuitapplications
【原文标准名称】:变压器电路用高压熔断器熔断体选择的应用指南
【标准号】:IEC60787-1983
【标准状态】:作废
【国别】:国际
【发布日期】:1983
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC32A
【标准类型】:()
【标准水平】:()
【中文主题词】:变压器;规范;电气工程;熔断体;熔断器;高电压;电路
【英文主题词】:Circuits;Electricalengineering;Fuse-links;Fuses;Highvoltage;Specifications;Transformers
【摘要】:Establishescriteriatoco-ordinatehigh-voltagefuse-linkswithothercircuitcomponents.Givesguidancefortheselectionoffuse-linkswithparticularreferencetotheirtime-currentcharacteristicsandratings.Appliestofuse-linksoffuseswhichco
【中国标准分类号】:K43
【国际标准分类号】:29_120_50
【页数】:10P;A4
【正文语种】:英语


【英文标准名称】:Informationprocessing-Datainterchangeon90mm(3.5in)flexiblediskcartridgesusingmodifiedfrequencymodulationrecordingat7958ftpradon80tracksoneachside-Part1:Dimensional,physicalandmagneticcharacteristics
【原文标准名称】:信息处理.改进调频记录的7958ftprad每面80磁道软磁盘用90mm(3.5in.)盒式软盘的数据交换.第1部分:尺寸规格,物理和磁性特征
【标准号】:ANSI/INCITS/ISO8860-1-2010
【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】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:数据;数据介质;数据处理;数据记录;数据存储;定义(术语);尺寸规格;双向;双面的;软盘;调频;信息交流;信息交换;信息处理;检验;磁盘;磁性能;材料的磁性能;磁记录;物理的;物理性能;材料的物理性质;特性;记录;可置换性;规范(验收);测试;导轨配置;磁道间距;磁道;双频记录方式
【英文主题词】:Data;Datamedia;Dataprocessing;Datarecording;Datastorage;Definitions;Dimensions;Doubledirection;Double-sided;Flexibledisks;Frequencymodulation;Informationexchange;Informationinterchange;Informationprocessing;Inspection;Magneticdisks;Magneticproperties;Magneticpropertiesofmaterials;Magneticrecording;Physical;Physicalproperties;Physicalpropertiesofmaterials;Properties;Recording;Replaceability;Specification(approval);Testing;Tracklayout;Trackpitch;Tracks;Two-frequencyrecordingmode
【摘要】:Providesthedimensional,physicalandmagneticcharacteristicsofthecartridgesoastoprovidephysicalinterchangeabilitybetweendataprocessingsystems.ProvidesforfulldatainterchangeabilitybetweendataprocessingsystemsinconjunctionwiththeISOstandards8860-2and9293,andapplies,moreover,inconjunctionwithISO683-13.
【中国标准分类号】:L64
【国际标准分类号】:35_220_21
【页数】:
【正文语种】:英语