ANSI/TIA-568-B.1-1-2001 商用建筑电信电缆敷设标准.第1部分:一般要求.补充件1.4对UTP和4对ScTP插塞式电缆的最小弯曲半径
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【英文标准名称】:CommercialBuildingTelecommunicationsCablingStandard-Part1:GeneralRequirements-Addendum1-Minimum4-PairUTPand4-PairScTPPatchCableBendRadius
【原文标准名称】:商用建筑电信电缆敷设标准.第1部分:一般要求.补充件1.4对UTP和4对ScTP插塞式电缆的最小弯曲半径
【标准号】:ANSI/TIA-568-B.1-1-2001
【标准状态】:作废
【国别】:美国
【发布日期】:2001
【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】:布线;电信;电子工程
【英文主题词】:Bends;Buildings;Businessfacilities;Cables;Cabling;Commercial;Electricalinstallations;Electronicengineering;Minimum;Pairs;Radius;Telecommunicationsystems;Telecommunications
【摘要】:Appliestominimum4-pairunshieldedtwisted-pair(UTP)and4-pairscreenedtwisted-pair(ScTP)patchcablebendradius
【中国标准分类号】:P92
【国际标准分类号】:33_040_01;91_140_50
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforCalculationofStagnationEnthalpyfromHeatTransferTheoryandExperimentalMeasurementsofStagnation-PointHeatTransferandPressure
【原文标准名称】:通过临界点传热与压力的热传递理论和实验测量来计算临界热函的标准试验方法
【标准号】:ASTME637-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:E21.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:航空航天运输;焓;热传递;材料;数学计算;测量;压力;航天技术;临界点
【英文主题词】:enthalpydistribution;enthalpyprofile;localenthalpy;stagnationenthalpy
【摘要】:Thepurposeofthistestmethodistoprovideastandardcalculationofthestagnationenthalpyofanaerodynamicsimulationdeviceusingtheheattransfertheoryandmeasuredvaluesofstagnationpointheattransferandpressure.Astagnationenthalpyobtainedbythistestmethodgivesaconsistentsetofdata,alongwithheattransferandstagnationpressureforablationcomputations.1.1Thistestmethodcoversthecalculationfromheattransfertheoryofthestagnationenthalpyfromexperimentalmeasurementsofthestagnation-pointheattransferandstagnationpressure.1.2Advantages1.2.1Avalueofstagnationenthalpycanbeobtainedatthelocationinthestreamwherethemodelistested.Thisvaluegivesaconsistentsetofdata,alongwithheattransferandstagnationpressure,forablationcomputations.1.2.2Thiscomputationofstagnationenthalpydoesnotrequirethemeasurementofanyarcheaterparameters.1.3LimitationsandConsiderationsTherearemanyfactorsthatmaycontributetoanerrorusingthistypeofapproachtocalculatestagnationenthalpy,including:1.3.1TurbulenceTheturbulencegeneratedbyaddingenergytothestreammaycausedeviationfromthelaminarequilibriumheattransfertheory.1.3.2Equilibrium,Nonequilibrium,orFrozenStateofGasThereactionratesandexpansionsmaybesuchthatthegasisfarfromthermodynamicequilibrium.1.3.3NoncatalyticEffectsThesurfacerecombinationratesandthecharacteristicsofthemetalliccalorimetermaygiveaheattransferdeviationfromtheequilibriumtheory.1.3.4FreeElectricCurrentsThearc-heatedgasstreammayhavefreeelectriccurrentsthatwillcontributetomeasuredexperimentalheattransferrates.1.3.5NonuniformPressureProfileAnonuniformpressureprofileintheregionofthestreamatthepointoftheheattransfermeasurementcoulddistortthestagnationpointvelocitygradient.1.3.6MachNumberEffectsThenondimensionalstagnation-pointvelocitygradientisafunctionoftheMachnumber.Inaddition,theMachnumberisafunctionofenthalpyandpressuresuchthataniterativeprocessisnecessary.1.3.7ModelShapeThenondimensionalstagnation-pointvelocitygradientisafunctionofmodelshape.1.3.8RadiationEffectsThehotgasstreammaycontributearadiativecomponenttotheheattransferrate.1.3.9HeatTransferRateMeasurementAnerrormaybemadeintheheattransfermeasurement(seeMethodE469andTestMethodsE422,E457,E459,andE511).1.3.10ContaminationTheelectrodematerialmaybeofalargeenoughpercentageofthemassflowratetocontributetotheheattransferratemeasurement.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A54
【国际标准分类号】:
【页数】:16P.;A4
【正文语种】:
基本信息
标准名称: | 国境口岸结核病监测规程 |
英文名称: | Codes for surveillance of tuberculosis at frontier port |
中标分类: |
医药、卫生、劳动保护 >>
卫生 >>
卫生检疫 |
ICS分类: |
|
发布部门: | 中华人民共和国国家质量监督检验检疫总局 |
发布日期: | 2003-05-28 |
实施日期: | 2003-12-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
起草单位: | 国家认证认可监督管理委员会 |
出版日期: | 1900-01-01 |
页数: | 平装16开, 页数:8, 字数:12千字 |
适用范围
本标准规定了在国境口岸进行传染性肺结核监测的对象、内容方法、结果判定和处置。本标准适用于国境口岸传染性肺结核的监测工作。
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所属分类: 医药 卫生 劳动保护 卫生 卫生检疫