ASTM B 330-2002 测定金属粉末及相关化合物的费歇尔数目的标准试验方法

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【英文标准名称】:StandardTestMethodforOpen-ChannelFlowMeasurementofWaterIndirectlybySlope-AreaMethod
【原文标准名称】:使用比降面积法迂回测量明渠水流流量的标准试验方法
【标准号】:ASTMD5130-1995(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1995
【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】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:flood;openchannelflow;waterdischarge;Bridgestudies;Channelroughness;Crosssectiondata/analysis--water;Dischargemeasurement;Fieldtesting--water;Floods;Indirectflow/dischargemeasurement;Openchannelflow--water;Slope-areamethod;Trans
【摘要】:Thistestmethodisparticularlyusefulfordeterminingthedischargewhenitcannotbemeasureddirectlybysometypeofcurrentmetertoobtainvelocitiesandwithsoundingweightstodeterminethecrosssection.Evenunderoptimumconditions,thepersonnelavailablecannotcoverallpointsofinterestduringamajorflood.Fieldpersonnelcannotalwaysobtainreliableresultsbydirectmethodsifthestageisrisingorfallingveryrapidly,ifflowingiceordebrisinterfereswithdepthorvelocitymeasurements.Undertheworstconditions,accessroadsareblocked,cablewaysandbridgesmaybewashedout,andknowledgeofthefloodfrequentlycomestoolatetoobtaindirectmeasurementsofflow.Therefore,sometypeofindirectmeasurementisnecessary.Theslope-areamethodisacommonlyusedmethod.1.1Thistestmethodcoversthecomputationofdischarge(thevolumerateofflow)ofwaterinopenchannelsorstreamsusingrepresentativecross-sectionalcharacteristics,thewater-surfaceslope,andcoefficientofchannelroughnessasinputtogradually-variedflowcomputations.1.2Thistestmethodproducesanindirectmeasurementofthemaximumdischargeforoneflowevent,usuallyaspecificflood.Thecomputeddischargemaybeusedtohelpdefinethehigh-watersegmentofastage-dischargerelation.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P12
【国际标准分类号】:
【页数】:12P.;A4
【正文语种】:英语


【英文标准名称】:Informationtechnology.Telecommunicationsandinformationexchangebetweensystems.Opensystemsinterconnection.Protocolforprovidingtheconnection-modetransportservice.
【原文标准名称】:信息技术.系统间的通讯和信息交换.开放系统互连.提供连接方式传输服务的协议.
【标准号】:NFZ66-340-1994
【标准状态】:作废
【国别】:法国
【发布日期】:1994-12-01
【实施或试行日期】:1994-12-05
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Communicationprocedures;Connection-mode;Controlprocedures;Dataprocessing;Dataservices;Datatransfer;Datatransmissionmethods;Definitions;Informationexchange;Informationinterchange;Informationprocessing;Informationtechnology;Networkinterconnection;Opensystems;Opensystemsinterconnection;OSI;Protocols;Specification;Telecommunications;Transmissionprotocol;Transportlayers;Transportprotocol;Transportservices
【摘要】:
【中国标准分类号】:L79
【国际标准分类号】:35_100_40
【页数】:146P.;A4
【正文语种】:其他