JB/T 53242-1999 管线用钢制平板闸阀 产品质量分等

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基本信息
标准名称:管线用钢制平板闸阀 产品质量分等
中标分类: 机械 >> 通用零部件 >> 阀门
替代情况:JB/T 53242-1994
发布日期:1999-12-30
实施日期:2000-06-01
首发日期:1900-01-01
作废日期:1900-01-01
出版日期:1900-01-01
页数:5页
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所属分类: 机械 通用零部件 阀门
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【英文标准名称】:Informationtechnology-Opensystemsinterconnection-Networkservicedefinition
【原文标准名称】:信息技术.开放式系统互连.网络服务定义
【标准号】:BSISO/IEC8348-1998
【标准状态】:现行
【国别】:英国
【发布日期】:1998-08-15
【实施或试行日期】:1998-08-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:数据传送;编码(数据转换);数据处理;字符集;代码字符集;质量;数据布置;协议;句法;网络层;地址(数据处理);开放系统互连;数据传输
【英文主题词】:Dataprocessing;Datatransfer;Definitions;Informationinterchange;Informationtechnology;Mainspowersupply;Networkinterconnection;Opensystemsinterconnection;OSI
【摘要】:ThisRecommendation|InternationalStandarddefinestheOSINetworkServiceintermsof:a)theprimitiveactionsandeventsoftheService;b)theparametersassociatedwitheachprimitiveactionandevent,andtheformwhichtheytake;c)theinterrelationshipbetween,andthevalidsequencesof,theseactionsandevents.TheprincipalobjectivesofthisRecommendation|InternationalStandardare1)TospecifythecharacteristicsofaconceptualNetworkServiceandthus,supplementtheReferenceModelinguidingthedevelopmentofNetworkLayerprotocols.2)Toencourageconvergenceofthecapabilitiesofferedbyprovidersofsubnetworks.3)Toprovideabasisfortheindividualenhancementofexistingheterogeneoussubnetworkstoacommonsubnetwork-independentNetworkServicetoenablethemtobeconcatenatedforthepurposeofprovidingglobalcommunication.(SuchconcatenationmayinvolveoptionaladditionalfunctionswhicharenotdefinedinthisRecommendation|InternationalStandard.)AdefinitionofthequalityofserviceisanimportantelementofthisRecommendation|InternationalStandard.4)Toprovideabasisforthedevelopmentandimplementationofsubnetwork-independentTransportLayerprotocolsdecoupledfromthevariabilityofunderlyingpublicandprivatesubnetworksandtheirspecificinterfacerequirements.ThisRecommendation|InternationalStandarddoesnotspecifyindividualimplementationsorproductsnordoesitconstraintheimplementationofentitiesandinterfaceswithinasystem.ThereisnoconformanceofequipmenttothisRecommendation|InternationalStandard.Instead,conformanceisachievedthroughimplementationofconformingOSINetworkprotocolswhichfulfilltheNetworkServicedefinedinthisRecommendation|InternationalStandard.
【中国标准分类号】:L79
【国际标准分类号】:35_100_30
【页数】:70P;A4
【正文语种】:英语


Product Code:SAE J866
Title:Friction Coefficient Identification System for Brake Linings
Issuing Committee:Brake Linings Standards Committee
Scope:This SAE Recommended Practice is intended to provide a uniform means of identification which may be used to classify the friction coefficient of brake linings, based on data obtained from tests conducted in accordance with SAE J661.It is emphasized that this document does not establish friction requirements for brake linings, nor does it designate significant characteristics of brake linings which must be considered in overall brake performance. Due to other factors that include brake system design and operating environment, the friction codes obtained from this document cannot reliably be used to predict brake system performance.