以梦想为话题的作文（精编7篇）

raisingstandardsworldwide™NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAWBSIBritishStandardsTechnicalproductspecification–SpecificationBS8888:2008LicensedCopy:Mr.NUIUser,IRISConsortium,06/10/200914:42,UncontrolledCopy,(c)BSIBS8888:2008BritiShStandardPublishingandcopyrightinformationtheBSicopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.©BSi2008iSBn9780580603686iCS01.100.01;01.110thefollowingBSireferencesrelatetotheworkonthisstandard:CommitteereferencetdW/4draftforcomment08/30171388dCPublicationhistoryFirstpublishedaugust2000SecondeditionOctober2002thirdeditionOctober2004FourtheditionOctober2006Fiftheditionnovember2008AmendmentsissuedsincepublicationAmd.No.DateTextaffectedLicensedCopy:Mr.NUIUser,IRISConsortium,06/10/200914:42,UncontrolledCopy,(c)BSIBritiShStandard©BSI2008•iBS8888:2008ContentsForewordiii1Scope12references23termsanddefinitions24GlobalstandardsunderpinningBS888835typesofdocumentation56Scales77Lines,arrowsandterminators78Lettering89Projections910Views911Sections1012Symbolsandabbreviations1013representationoffeatures1214representationofcomponents1315dimensioningandtolerancing1416Geometricaltolerancing2017Surfacetextureindication2118Graphicalrepresentationandannotationof3-ddata(3-dmodellingoutput)2219Verification2320Security2321Storageandretrieval2422Marking2423Protectionnotices26Listofannexesannexa(normative)normativereferences27annexB(informative)informativereferences48annexC(informative)Expressionoftheconcept50annexd(informative)Cast,forgedandmouldedparts51annexE(normative)documentsecurity–Enhanced59annexF(informative)KeydifferencesbetweenBS8888geometricaltolerancingandaSMEY14.5geometricdimensioningandtolerancing(Gd&t)60annexG(informative)ForthcomingamendmentstoBSiSO1101:200464annexh(informative)technicalproductspecification–Geometricalproductspecification(GPS)75ListoffiguresFigure1–Metricreferencegraduations6Figure2–auxiliaryviewshowingtrueshapeofinclinedsurface10Figure3–Permissibleinterpretationswhennoformcontrolisgivenonthedrawing16Figure4–dimensioningofkeyways19Figure5–Examplesofgeneraltolerancenotes20Figure6–Methodofindicatingthattheindependencysystemoftolerancinghadbeenused25Figure7–Methodofindicatingthatthedependencysystemoftolerancinghadbeenused25Figured.1–reproducedFigureE.1fromiSO8062-3,showingthetPSfortheexamplecastpart54Figured.2–reproducedFigureE.2fromiSO8062-3,showingtheexamplecastpartwiththeapplicablegeneralstraightnesstolerancesapplied55LicensedCopy:Mr.NUIUser,IRISConsortium,06/10/200914:42,UncontrolledCopy,(c)BSIBS8888:2008ii•©BSI2008BritiShStandardFigured.3–reproducedFigureE.5fromiSO8062-3,showingtheexamplecastpartwiththeapplicablegeneralparallelismtolerancesapplied55Figured.4–reproducedFigure1fromBS7010,showingthosedimensionswhichrelatetothemouldandmouldclosure58FigureG.1–indicationoforientationofthetolerancezone69FigureG.2–Useofthemedianfeature69FigureG.3–restrictedpartsofafeature69FigureG.4–Exampleofacommontolerancezone69FigureG.5–Exampleofacommontolerancezone70FigureG.6–Examplesoftheuseofthe“allaround”symbol70FigureG.7–Unequallydisposedtolerancezoneindicator70FigureG.8–Exampleoftheuseofthecompoundtolerancedfeature71FigureG.9–indicatingthestartandendofthecompoundtolerancedfeature71FigureG.10–indicatingacommonsetoftolerancedfeatures71FigureG.11–indicatingacommoncompoundtolerancezone72FigureG.12–twodifferentwaysofindicatingaGPSwithprojectedtolerancemodifier72FigureG.13–Explanationofthedirectionoftheextendedfeature72FigureG.14–Exampleofdirectindicationofaprojectedtolerancewithanoffset73FigureG.15–Exampleofindirectindicationofaprojectedtolerancewithanoffset73FigureG.16–Exampleoftheuseofprojectedtolerancezonetogetherwiththemedianmodifier74FigureG.17–Exampleoftheuseofprojectedtolerancezonetogetherwithacommonzonemodifier74Figureh.1–Modeloftherelationshipbetweenspecification,verificationandtheactualworkpiece76Figureh.2–thelinkbetweendesignintentandmetrology78Figureh.3–thedualityprinciple79Listoftablestablea.1–normativereferences28tableB.1–informativereferences48tabled.1–drawingtypeindicatorgraphicalsymbols52tabled.2–Examplesofpartconditionidentifierapplication53tabled.3–CollatedlettersymbolsintroducediniSO10135:200756Summaryofpagesthisdocumentcomprisesafrontcover,aninsidefrontcover,pagesitoiv,pages1to82,aninsidebackcoverandabackcover.LicensedCopy:Mr.NUIUser,IRISConsortium,06/10/200914:42,UncontrolledCopy,(c)BSIBritiShStandard©BSI2008•iiiBS8888:2008ForewordPublishinginformationthisBritishStandardwaspublishedbyBSiandcameintoeffecton30november2008.itwaspreparedbytechnicalCommitteetdW/4,Technicalproductspecification(TPS)–Methodology,presentationandverification.alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.SupersessionthisBritishStandardsupersedesBS8888:2006,whichiswithdrawn.thisneweditionupdatesthefourthedition,bringinginrelevantstandardspublishedduring2007andearly2008.itdoesnotrepresentafullrevisionofthestandard,whichwillbeundertakeninduecourse.RelationshipwithotherpublicationsthefunctionofBS8888istodrawtoget