ANSI/INCITS/ISO/IEC 19123-2005 地理学信息.覆盖几何学和功能的计划
时间:2024-05-02 05:00:12 来源: 标准资料网 作者：标准资料网 阅读：8849
【英文标准名称】:Geographicinformation-Schemaforcoveragegeometryandfunctions
【原文标准名称】:地理学信息.覆盖几何学和功能的计划
【标准号】:ANSI/INCITS/ISO/IEC19123-2005
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:坐标系(地理);;;数据处理;数据表示;数据传送;定义;定义;特点;大地测量学;;地理学;;几何;信息;信息处理;;拓扑学;向量(数学)
【英文主题词】:Coordinates(geography);Coverage;Datadescription;Dataprocessing;Datarepresentation;Datatransfer;Definition;Definitions;Features;Geodesy;Geographicinformation;Geography;Geomatics;Geometry;Information;Informationprocessing;Schemes;Topology;Vectors(mathematics)
【摘要】:ThisInternationalStandarddefinesaconceptualschemaforthespatialcharacteristicsofcoverages.Coveragessupportmappingfromaspatial,temporalorspatiotemporaldomaintofeatureattributevalueswherefeatureattributetypesarecommontoallgeographicpositionswithinthedomain.
【中国标准分类号】:A76
【国际标准分类号】:35_240_70
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodsforElectricalPerformancePropertiesofInsulationsandJacketsforTelecommunicationsWireandCable
【原文标准名称】:远程通信电线和电缆用绝缘体和套管电气性能特性的标准试验方法
【标准号】:ASTMD4566-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D09.18
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aging;attenuation;attenuationtocrosstalkrationear-end;attenuationtocrosstalkratiofar-end;capacitancedeviation;capacitancedifference;capacitanceunbalancepair-to-pair;capacitanceunbalancepair-to-ground;capacitanceunbalancepai
【摘要】:Electricaltests,properlyinterpreted,provideinformationwithregardtotheelectricalpropertiesoftheinsulation.Theelectricaltestvaluesgiveanindicationastohowtheinsulationwillperformunderconditionssimilartothoseobservedinthetests.Electricaltestsmayprovidedataforresearchanddevelopment,engineeringdesign,qualitycontrol,andacceptanceorrejectionunderspecifications.1.1Thesetestmethodscoverproceduresforelectricaltestingofthermoplasticinsulationsandjacketsusedontelecommunicationswireandcableandforthetestingofelectricalcharacteristicsofcompletedproducts.Todeterminetheproceduretobeusedontheparticularinsulationorjacketcompound,orontheendproduct,referenceshouldbemadetothespecificationfortheproduct.1.2Thetestmethodsappearinthefollowingsectionsofthisstandard:TestMethodSectionsElectricalTestsofInsulationx2014;In-Process
4-8
DCprooftest
8
Insulationdefectorfaultrate
7
Sparktest
6
ElectricalTestsofCompletedWireandCable
9-51
Attenuation
24
Attenuation,effectsduetoaging
31
Attenuation,effectsduetoelevatedtemperature
29
Attenuation,effectsduetohumidity
30
Attenuationtocrosstalkratiox2014;farend(ACR-F)
28
Attenuationtocrosstalkratiox2014;nearend(ACR-N)
26
Capacitancedeviation
19
Capacitancedifference
20
Capacitanceunbalance,Pair-to-ground(CUPG)
22
Capacitanceunbalance,Pair-to-pair(CUPP)
21
Capacitanceunbalance,Pair-to-supportwire
23
CharacteristicImpedancex2014;Method1Propagationconstantandcapacitance
47
CharacteristicImpedancex2014;Method2,Single-endedmeasurements
48
CharacteristicImpedancex2014;Method3LeastSquaresFunctionFit
49
Coaxialcapacitance(capacitancetowater)
17
Conductorcontinuity
11
Conductorresistance(CR)
【英文标准名称】:PressingandDryingRefractoryPlasticandRammingMixSpecimens
【原文标准名称】:压制的和干燥塑性耐火材料及捣实混合样品
【标准号】:ASTMC1054-1985
【标准状态】:作废
【国别】:美国
【发布日期】:1985
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:干燥;压实;压制;样品;工艺;试样;耐火材料;塑料
【英文主题词】:compacting;processes;refractorymaterials;samples;drying;pressing(forming);plastics
【摘要】:
【中国标准分类号】:Q40
【国际标准分类号】:91_100_20
【页数】:3P;A4
【正文语种】:英语