EN 300185-1-1998 综合业务数字网(ISDN).会议呼叫加入(CONF)补充业务.数字用户用1号信令系统(DSS1)协议.第1部分:协议规范
时间:2024-05-06 13:24:44 来源: 标准资料网 作者：标准资料网 阅读：8947
【英文标准名称】:IntegratedServicesDigitalNetwork(ISDN)-Conferencecall,add-on(CONF)supplementaryservice-DigitalSubscriberSignallingSystemNo.one(DSS1)protocol-Part1:Protocolspecification(EndorsementoftheEnglishversionEN300185-1V1.2.4(1998
【原文标准名称】:综合业务数字网(ISDN).会议呼叫加入(CONF)补充业务.数字用户用1号信令系统(DSS1)协议.第1部分:协议规范
【标准号】:EN300185-1-1998
【标准状态】:现行
【国别】:
【发布日期】:2000-01
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:会议(电声)系统;电话技术;代表会议;会议电话;电话网;电话局;连接线;数字连接;电信设备;信息交换;信号发送系统;补充业务;信号传输;电气工程;传输协议;定义;数字信号;综合业务数字网络;服务定义;电信;电信
【英文主题词】:Communicationservice;Conferencecalls;Conferencesystems;Conferences;Connectionlines;Definition;Definitions;Digitalconnections;Digitalsignals;Electricalengineering;Informationinterchange;ISDN;Servicedefinition;Signaltransmission;Signallingsystems;Supplementaryservices;Telecommunication;Telecommunications;Telephonenetworks;Telephoneservices;Telephonetechnics;Transmissionprotocol
【摘要】:
【中国标准分类号】:M11
【国际标准分类号】:33_080
【页数】:1P.;A4
【正文语种】:英语
【英文标准名称】:Plastics-Polyolsforuseintheproductionofpolyurethane-Determinationofhydroxylnumber
【原文标准名称】:塑料聚氨酯生产用多元醇羟基数的测定
【标准号】:ISO14900-2001
【标准状态】:现行
【国别】:国际
【发布日期】:2001-02
【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/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:测定;卡尔费希尔;定义;羟基;定义;塑料;酸度;羟基值;生产;滴定法;;原材料;试验;试验;卡·弗歇尔试剂;聚氨酯;含量测定
【英文主题词】:Acidity;Definitions;Determination;Determinationofcontent;Hydroxyl;Hydroxylvalue;KarlFischer;KarlFischerreagent;Plastics;Polyols;Polyurethane;Production;Rawmaterial;Testing;Tests;Titration
【摘要】:ThisInternationalStandardspecifiestwomethodsforthemeasurementofthehydroxylnumberofpolyolsusedaspolyurethanerawmaterials.Itisnecessarytoknowthehydroxylcontentofpolyolstoproperlyformulatepolyurethanesystems.MethodAisprimarilyapplicabletoreadilyesterifiedpolyetherpolyols.Itisalsorecommendedforpolyolswhichhavesignificantsterichindrance,suchasthosebasedonsugars.MethodBisrecommendedforpolyetherpolyols,polymerpolyolsandamine-initiatedpolyols,butmaygivelowresultsforstericallyhinderedpolyols.Otherpolyolsmaybeanalysedbythesemethodsifprecautionsaretakentoverifyapplicability.Thesemethodscanbeusedforresearchandforqualitycontrolandspecificationpurposes.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:11P.;A4
【正文语种】:英语
MIL-STD-1201C, MILITARY STANDARD: ETHYL ALCOHOL (ETHANOL), TECHNICAL AND DENATURED GRADES (04 APR 1994) [NO S/S DOCUMENT]., This standard is a presentation of nomenclature, Chemical Abstracts Service Registry Numbers, symbols, physical and chemical properties and requirements, military and typical commercial uses, directions for use, packaging data, labeling, general safety precautions, storage information, and shelf life of all military standard technical and denatured grades, ethyl alcohol. This standard does not necessarily include all classifications of the item represented by the title of those which are commercially available. It does contain items preferred for use in the selection of technical and denatured grades, ethyl alcohol, for application by the Department of Defense.