DIN 18121-2-1989 建筑地基.试验及试验仪器.含水量.快速测定法
时间:2024-05-21 07:10:09 来源: 标准资料网 作者：标准资料网 阅读：9939
【英文标准名称】:Soilanalysis;determinationofwatercontentofsoilbyrapidmethods
【原文标准名称】:建筑地基.试验及试验仪器.含水量.快速测定法
【标准号】:DIN18121-2-1989
【标准状态】:作废
【国别】:德国
【发布日期】:1989-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:心土;建筑;现场勘测;土壤试验;土壤普查;土方工程;土壤采样;水质试验;试验;定义;含量测定;水
【英文主题词】:construction;earthworks;soilsampling;water;definitions;soiltesting;soilsurveys;determinationofcontent;testing;subsoil;siteinvestigations;watertesting
【摘要】:
【中国标准分类号】:P22;P20
【国际标准分类号】:93_020
【页数】:7P;A4
【正文语种】:德语
【英文标准名称】:Mountingdimensionsofsingleroddoubleactinghydrauliccylinders.Specificationfor160barmediumseries
【原文标准名称】:单杆双动液压缸的安装尺寸.第1部分:160bar中型系列规范
【标准号】:BS6331Pt.1-1983
【标准状态】:作废
【国别】:英国
【发布日期】:1983-01-31
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:直径;液压缸;双作用缸;活塞杆;固定;名称与符号;基座;单活塞杆缸;螺纹;尺寸;液压设备
【英文主题词】:diameter;threads;double-actingcylinders;hydraulicequipment;seatings;fixing;hydrauliccylinders;pistonrods;dimensions;singlepiston-rodcylinders;designations
【摘要】:
【中国标准分类号】:J20
【国际标准分类号】:23_100_20
【页数】:12P;A4
【正文语种】:英语
【英文标准名称】:Cablenetworksfortelevisionsignals,soundsignalsandinteractiveservices.Activewidebandequipmentforcablenetworks
【原文标准名称】:电视信号,声音信号和交互服务用电缆网络.电缆网络用有源宽带设备
【标准号】:BSEN60728-3-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2011-06-30
【实施或试行日期】:2011-06-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Amplifiers;Broadbandsystems;Cabledistributionsystems;Characteristics;Coaxialcables;Definitions;Digital;Interactive;Measurement;Measuringtechniques;Performance;Performancerequirements;Signaltransmission;Signals;Soundbroadcasting;Televisionreception;Televisiontransmission;Visionsignals;Widebandtransmission
【摘要】:ThispartofIEC60728laysdownthemeasuringmethods,performancerequirementsanddatapublicationrequirementsforactivewidebandequipmentofcablenetworksfortelevisionsignals,soundsignalsandinteractiveservices.Thisstandard·appliestoallbroadbandamplifiersusedincablenetworks;·coversthefrequencyrange5MHzto3000MHz;NOTETheupperlimitof3000MHzisanexample,butnotastrictvalue.Thefrequencyrange,orranges,overwhichtheequipmentisspecified,shouldbepublished.·appliestoone-wayandtwo-wayequipment;·laysdownthebasicmethodsofmeasurementoftheoperationalcharacteristicsoftheactiveequipmentinordertoassesstheperformanceofthisequipment;·identifiestheperformancespecificationstobepublishedbythemanufacturers;·statestheminimumperformancerequirementsofcertainparameters.Amplifiersaredividedintothefollowingtwoqualitylevels:Grade1:amplifierstypicallyintendedtobecascaded;Grade2:amplifiersforusetypicallywithinanapartmentblock,orwithinasingleresidence,tofeedafewoutlets.Practicalexperiencehasshownthatthesetypesmeetmostofthetechnicalrequirementsnecessaryforsupplyingaminimumsignalqualitytothesubscribers.Thisclassificationisnotarequirementbutisprovidedtousersandmanufacturersforinformationaboutminimumqualitycriteriaofthematerialrequiredtoinstallnetworksofdifferentsizes.Thesystemoperatorhastoselectappropriatematerialtomeettheminimumsignalqualityatthesubscriber’soutlet,andtooptimisecost/performance,takingintoaccountthesizeofthenetworkandlocalcircumstances.Allrequirementsandpublisheddataareunderstoodasguaranteedvalueswithinthespecifiedfrequencyrangeandinwell-matchedconditions.
【中国标准分类号】:M62
【国际标准分类号】:33_060_40
【页数】:70P.;A4
【正文语种】:英语