【英文标准名称】:Industrialautomationsystemsandintegration-Productdatarepresentationandexchange-Part204:Applicationprotocol:Mechanicaldesignusingboundaryrepresentation
【原文标准名称】:工业自动化系统和集成.产品数据表示和交换.第204部分:应用协议:边界表示的机械设计
【标准号】:ISO10303-204-2002
【标准状态】:现行
【国别】:国际
【发布日期】:2002-08
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC184
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;数据交换;记录;描述;自动化;边界制图;自动化系统;产品数据;工业产品;数据;执行;计算机应用;数据表示;计算机辅助设计
【英文主题词】:Automation;Automationsystems;Boundarydrawings;Computeraideddesign;Computerapplications;Data;Dataexchange;Datarepresentation;Definitions;Descriptions;EXPRESS;Implementation;Industrialproducts;Productdata;Records
【摘要】:ThispartofISO10303specifiestheuseoftheintegratedresourcesnecessaryforthescopeandinforma-tionrequirementsfortheuseandexchangeofboundaryrepresentationsolidmodelsinthemechanicalengineeringdesigncontext.NOTETheapplicationactivitymodelinannexFprovidesagraphicalrepresentationoftheprocessesandinfor-mationflowsthatarethebasisforthedefinitionofthescopeofthispartofISO10303.Thisdocumentdescribesanapplicationreferenceenvironmentforthegenerationandexchangeofvolume-baseddesigndatainthecomputer-aidedmechanicaldesignprocess,togetherwithappropriatedatamod-elsandaphysicalfileimplementationform.Theinformationmodelsupportsallgeometricandtopolog-icalaspectsofacompletedescriptionoftheshapeandsizeofanobject.ItwasoriginallydevelopedforapplicationsinmechanicalengineeringdesignusingtheCADmodellingtechniqueboundaryrepresen-tation(B-rep)solidmodellingandmaybeappropriateforotherapplicationareasusingthistechnique.ThefollowingarewithinthescopeofthisPartofISO10303:—ThreetypesofB-repmodelthatareusedtorepresentshape:a)facetedB-repmodel;b)B-repmodelwithelementarysurfaces;c)B-repmodelwithsculpturedsurfaces;—curveandsurfacegeometry;—curvesdefinedinparameterspace(pcurves);—manifoldtopology;—productidentificationinformation;—theassociationofsimplepresentationattributessuchasline-style,line-width,colourwithanentireB-repmodel,or,withgeometricortopologicalelementsofaB-repmodel;—preservationofuser-definednamesofobjects;—unitsandmeasuresassociatedwithgeometricelements;—assembliesofpartsandsub-assemblies.ThefollowingareoutsidethescopeofthisPartofISO10303:—Othertypesofshaperepresentation:a)wireframemodels;b)surfacemodels;c)geometricallytrimmedcurvesandsurfaces;d)constructivesolidgeometrymodels;e)compoundB-repmodels.—Geometricandtopologicaldata:a)2Dgeometry,otherthanforthedefinitionofpcurves;b)self-intersectinggeometry;c)non-manifoldtopology.—Dimensioning;—Tolerances;—Manufacturinginformation;—Advancedpresentationfeaturessuchasmultipleviews,characterfontsandsymbols.
【中国标准分类号】:N17
【国际标准分类号】:35_240_50
【页数】:270P.;A4
【正文语种】:英语


【英文标准名称】:PracticeforFieldCollectionofSettledDustSamplesUsingWipeSamplingMethodsforLeadDeterminationbyAtomicSpectrometryTechniques(04.11)
【原文标准名称】:原子光谱法测定铅含量时用擦揩取样法现场收集沉积灰尘样品惯例
【标准号】:ANSI/ASTME1728-2002
【标准状态】:作废
【国别】:美国
【发布日期】:2002
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:现场试验;铅含量
【英文主题词】:leadcontent;fieldtesting
【摘要】:
【中国标准分类号】:Z10
【国际标准分类号】:13_080_05
【页数】:
【正文语种】:英语