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弊模梓袧楹祒傖荎恅﹝婓楹祒徹最笢ㄛ祥屾衄壽等弇膘祜勤楹祒腔跡宒睿籵蚚蚚逄輛俴寞毓﹝峈森ㄛ扂侗衾1999翌馱釬﹝晤秶▲弊模梓袧荎恅荎恅唳楹祒硌鰍◎腔醴腔岆ㄩ﹛﹛1ㄝ勤弊模梓袧荎恅唳梓袧笢剒猁苀珨腔跡宒輛俴寞毓﹛﹛2ㄝ勤弊模梓袧荎恅唳梓袧笢剒猁苀珨腔逄曆睿蚚棵輛俴寞毓﹛﹛3ㄝ勤迵珋俴GB1.1摯ISO/IEC﹛﹛掛硌鰍巠蚚衾蔚扂弊弊模梓袧楹祒傖荎恅恅掛腔梓袧趙笢陑媼﹜跡宒﹛﹛2.1脹肮/党蜊ㄗ脹虴ㄘ粒蚚弊暱梓袧腔弊模梓袧茼妏蚚埻荎恅唳掛ㄛ甜睫磁ISO/IEC硌鰍21ㄗ1999﹛﹛2.2勤衾準脹虴粒蚚弊暱梓袧腔弊模梓袧ㄛ婓楹祒奀茼鴃褫夔迵埻荎恅唳掛跡宒悵厥珨祡﹝﹛﹛2.3勤衾準粒蚚弊暱梓袧腔弊模梓袧ㄛ婓楹祒奀茼鴃褫夔眕眈茼弊暱梓袧釬峈跡宒統蕉﹝﹛﹛2.4猾醱睿忑珜跡宒獗蜇翹A睿蜇翹B﹝﹛﹛3.1猾醱猾醱蚚逄腔荎恅桶扴﹛﹛3.1.1﹛﹛NationalStandardofthePeople'sRepublicofChina﹛﹛3.1.2弊模窐講撮扲潼飭擁楷票﹛﹛IssuedbyChinaStateBureauofQualityandTechnicalSupervision﹛﹛3.1.3弊模撮扲潼飭擁楷票﹛﹛IssuedbyChinaStateBureauofTechnicalSupervision﹛﹛3.1.4弊模梓袧擁楷票﹛﹛IssuedbyChinaStateBureauofStandards﹛﹛3.1.5﹛﹛Issuedate﹛﹛3.1.6﹛﹛Implementationdate﹛﹛3.1.7脹肮粒蚚﹛﹛IDT﹛﹛3.1.8党蜊(脹虴)粒蚚﹛﹛MOD﹛﹛3.1.9準脹虴粒蚚﹛﹛NEQ﹛﹛3.2醴棒醴棒蚚逄腔荎恅桶扴﹛﹛3.2.1醴棒﹛﹛contents﹛﹛3.2.2蜇翹﹛﹛annex﹛﹛3.2.3統蕉恅瓬﹛﹛bibliography﹛﹛3.2.4坰竘﹛﹛index(es)﹛﹛3.2.5芞﹛﹛figure(s)﹛﹛3.2.6桶﹛﹛table(s)﹛﹛3.3晟窒煦蚚逄腔荎恅桶扴﹛﹛3.3.1﹛﹛Foreword﹛﹛3.3.2掛弊模梓袧脹肮粒蚚IEC(ISO)℅℅℅℅梓袧:﹛﹛ThisnationalstandardisidenticaltoIEC(ISO)℅℅℅℅﹛﹛3.3.3掛弊模梓袧党蜊(脹虴)粒蚚IEC(ISO)℅℅℅℅梓袧:﹛﹛ThisnationalstandardismodifiedinrelationtoIEC(ISO)℅℅℅℅﹛﹛3.3.4掛弊模梓袧準脹虴粒蚚IEC(ISO)℅℅℅℅梓袧:﹛﹛ThisnationalstandardisnotequivalenttoIEC(ISO)℅℅℅℅﹛﹛3.3.5掛弊模梓袧蜇翹℅℅℅℅岆梓袧腔蜇翹(硃喃璃)﹛﹛Annex℅℅℅℅/Annexes℅℅℅℅ofthisnationalstandardis/arenormative﹛﹛3.3.6掛弊模梓袧蜇翹℅℅℅℅岆枑尨腔蜇翹(統蕉璃)﹛﹛Annex℅℅℅℅/annexes℅℅℅℅ofthisnationalstandardis/areinformative﹛﹛3.3.7﹛﹛Therehavebeensomesignificantchangesinthisnationalsstandardoveritspreviouseditioninthefollowingtechnicalaspects﹛﹛3.3.8掛弊模梓袧迵垀粒蚚弊暱梓袧腔翋猁撮扲船祑﹛﹛Themaintechnicaldifferencesbetweenthenationalstandardandtheinternationalstandardadopted﹛﹛3.3.9﹛﹛Thisnationalstandardwillreplace℅℅℅℅fromtheimplementationdateofthisstandard﹛﹛3.3.10掛弊模梓袧蚕℅℅℅℅枑堤﹛﹛Thisnationalstandardwasproposedby℅℅℅℅﹛﹛3.3.11掛弊模梓袧蚕℅℅℅℅寥諳﹛﹛Thisnationalstandardisunderthejurisdictionof℅℅℅℅﹛﹛3.3.12Thisnationalstandardwasdraftedby℅℅℅℅﹛﹛3.4竘晟﹛﹛3.4.1竘晟introduction﹛﹛3.5毓峓毓峓窒煦蚚逄腔荎恅桶扴:﹛﹛3.5.1翋枙睿毓峓subjectandtheaspect(s)covered﹛﹛3.5.2掛弊模梓袧寞隅......腔喜渡﹛﹛Thisnationalstandardspecifiesthedimensionsof......﹛﹛3.5.3掛弊模梓袧寞隅......腔源楊﹛﹛Thisnationalstandardspecifiesamethodof......﹛﹛3.5.4掛弊模梓袧寞隅......腔俶夔﹛﹛Thisnationalstandardspecifiesthecharacteristicsof......﹛﹛3.5.5掛弊模梓袧寞隅......腔炵苀﹛﹛Thisnationalstandardestablishesasystemfor......﹛﹛3.5.6掛弊模梓袧寞隅......腔價掛埻燴﹛﹛Thisnationalstandardestablishesgeneralprinciplesfor﹛﹛3.5.7掛弊模梓袧巠蚚衾......﹛﹛Thisnationalstandardisapplicableto......﹛﹛3.6竘蚚梓袧竘逄腔荎恅桶扴(跦擂笢恅恅掛植a,b):﹛﹛a.狟蹈梓袧笢垀婦漪腔沭恅ㄛ籵徹婓掛梓袧笢竘蚚奧凳傖峈掛梓袧腔沭恅﹝掛梓袧堤唳奀ㄛ垀尨唳掛歙峈衄虴﹝垀衄梓袧飲頗掩党隆ㄛ妏蚚掛梓袧腔跪源茼抻枒妏蚚狟蹈梓袧郔陔唳掛腔褫夔俶﹝﹛﹛Thefollowingstandardscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthisstandard.Attimeofpublication,theeditionsindicatedwerevalid.Allstandardsaresubjecttorevision,andpartiestoagreementsbasedonthisstandardareencouragedtoinvestigatethepossibilityofapplyingthemostrecenteditionsofthestandardsindicatedbelow.﹛﹛b.﹛﹛Thefollowingnormativedocumentscontainprovisionwhich,throughreferenceinthistext,consituteprovisionsofthisnationalstandard.Fordatedreference,subsequentamendmentsto,orrevisionsof,anyofthesepublicationsdonotapply.Forundatedreferences,thelastesteditionofthenormativedocumentreferredtoapplies.﹛﹛3.7扲逄睿隅砱:眕狟摯℅℅℅℅跤堤腔扲逄睿隅砱巠蚚衾掛梓袧﹛﹛Forthepurposesofthisnationalstandard,thetermsanddefinitionsgivenin℅℅℅℅andthefollowingapply.﹛﹛3.8都蚚扲逄﹛﹛3.8.1梓袧趙摯梓袧恅璃﹛﹛(1)梓袧趙﹛﹛standardization﹛﹛(2)梓袧恅璃﹛﹛normativedocument﹛﹛(3)弊暱梓袧﹛﹛internationalstandard﹛﹛(4)﹛﹛regionalstandard﹛﹛(5)弊模梓袧﹛﹛nationalstandard﹛﹛(6)俴珛梓袧﹛﹛professionalstandard﹛﹛(7)華源梓袧﹛﹛provincialstandard﹛﹛(8)﹛﹛companystandard﹛﹛(9)絳寀﹛﹛directive/guide﹛﹛(10)寞毓﹛﹛specification﹛﹛(11)軞寞毓﹛﹛genericspecification﹛﹛(12)籵蚚寞毓﹛﹛generalspecification﹛﹛(13)撮扲寞毓﹛﹛technicalspecification﹛﹛(14)砆牉寞毓﹛﹛detailspecification﹛﹛(15)煦寞毓﹛﹛sectionalspecification﹛﹛(16)諾啞砆牉寞毓﹛﹛blankdetailspecification﹛﹛(17)寞最﹛﹛code﹛﹛(18)寞寀(寞隅)﹛﹛rule﹛﹛(19)硌鰍﹛﹛guide﹛﹛(20)忒聊﹛﹛handbook﹛﹛(21)撮扲惆豢﹛﹛technicalreport﹛﹛(22)﹛﹛mandatorystandard﹛﹛(23)芢熱俶梓袧﹛﹛voluntarystandard﹛﹛(24)硌絳俶撮扲恅璃﹛﹛technicalguide﹛﹛(25)楊寞﹛﹛regulation﹛﹛(26)撮扲楊寞﹛﹛technicalregulation﹛﹛﹛3.8.2梓袧腔濬梗﹛﹛(1)價插梓袧﹛﹛basicstandard﹛﹛(2)扲逄梓袧﹛﹛terminologystandard﹛﹛(3)彸桄梓袧﹛﹛testingstandard﹛﹛(4)源楊梓袧﹛﹛methodstandard﹛﹛(5)﹛﹛productstandard﹛﹛(6)徹最梓袧﹛﹛processstandard﹛﹛(7)督昢梓袧﹛﹛servicestandard﹛﹛(8)諉諳梓袧﹛﹛interfacestandard﹛﹛(9)杅硉梓袧﹛﹛standardondatatobeprovided﹛﹛3.8.3梓袧趙郪眽摯梓袧儂凳﹛﹛(1)弊暱梓袧趙郪眽﹛﹛InternationalOrganizationforstandardization(ISO)﹛﹛(2)弊暱萇馱巹埜頗﹛﹛InternationalElectrotechnicalCommission(IEC)﹛﹛(3)弊模窐講撮扲潼飭擁﹛﹛ChinaStateBureauofQuality&TechnicalSupervision(CSBTS)﹛﹛(4)弊暱萇陓薊襠﹛﹛InternationalTelecommunicationUnion(ITU)﹛﹛(5)﹛﹛Nationaltechnicalcommitteeofstandardizationfor℅℅℅℅﹛﹛﹛3.8.4梓袧恅璃腔賦凳﹛﹛(1)猾醱﹛﹛frontcover﹛﹛(2)醴棒﹛﹛content﹛﹛(3)﹛﹛foreword﹛﹛(4)竘晟﹛﹛introduction﹛﹛(5)IEC/ISO﹛﹛IEC/ISOforeward﹛﹛(6)梓袧靡備﹛﹛title﹛﹛(7)毓峓﹛﹛scope﹛﹛(8)竘蚚梓袧﹛﹛normativereference﹛﹛(9)扲逄睿隅砱﹛﹛termsanddefinitions﹛﹛(10)隅砱﹛﹛definition﹛﹛(11)睫瘍﹛﹛symbol﹛﹛(12)芞倰睫瘍﹛﹛graphicalsymbol﹛﹛(13)恅趼睫瘍﹛﹛lettersymbol﹛﹛(14)坫謹逄﹛﹛abbreviatedterm/abbreviation﹛﹛(15)喲欴﹛﹛sampling﹛﹛(16)數杅喲欴﹛﹛attributedsampling﹛﹛(17)聆彸﹛﹛testing﹛﹛(18)彸桄test﹛﹛(19)彸桄源楊﹛﹛testmethod﹛﹛(20)彸