【英文标准名称】:Soilimproversandgrowingmedia-Determinationofelectricalconductivity;GermanversionEN13038:2011
【原文标准名称】:土壤改良剂和生长基质.电导率的测定.德文版EN13038-2011
【标准号】:DINEN13038-2012
【标准状态】:现行
【国别】:德国
【发布日期】:2012-01
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Agriculture;Chemicals;Conductivity;Definitions;Determination;Electricalconductivity;Electrolytes;Fertilizers;Filtration;Growingmedia;Investigations;Soilimprovement;Soilimprovingmaterials;Specification(approval);Testing
【摘要】:
【中国标准分类号】:B13
【国际标准分类号】:65_080
【页数】:12P;A4
【正文语种】:德语


【英文标准名称】:Cableddistributionsystemsfortelevisionandsoundsignals-Part1:Methodsofmeasurementandsystemperformance
【原文标准名称】:电视和声音信号电缆分配系统第1部分：测量方法和系统性能
【标准号】:IEC60728-1-2001
【标准状态】:作废
【国别】:国际
【发布日期】:2001-11
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC100
【标准类型】:()
【标准水平】:()
【中文主题词】:同轴电缆;测量技术;测量;电缆分布系统;规范(验收);定义;声音广播;电视接收
【英文主题词】:Cabledistributionsystems;Coaxialcables;Definition;Definitions;Measurement;Measuringtechniques;Soundbroadcasting;Specification(approval);Televisionreception
【摘要】:ThispartofIEC60728isapplicabletoanycableddistributionsystem(includingindividualreceivingsystems)havingacoaxialcableoutputandprimarilyintendedfortelevisionandsoundsignalsoperatingbetweenabout30MHzand2150MHz.Thisstandardspecifiesthebasicmethodsofmeasurementoftheoperationalcharacteristicsofcableddistributionsystemshavingcoaxialcableoutputsinordertoassesstheperformanceofthesesystemsandtheirperformancelimits.Allrequirementsrefertotheperformancelimitswhichareobtainedbetweentheinput(s)totheheadendorheadendsandanysystemoutletwhenterminatedinaresistanceequaltothenominalloadimpedanceofthesystem,unlessotherwisespecified.Wheresystemoutletsarenotused,theaboveappliesatthesubscriber'sendofthesubscriber'sfeeder.NOTE1Basicmethodsofmeasurementaredescribedinthisstandard.However,anyequivalentmethodthatensuresatleastthesameaccuracymaybeused.NOTE2fthesystemoperatorwishestosubdividethesystemintoanumberofparts,theaccumulationofdegradationsshouldnotexceedthefiguresgivenbelow.NOTE3Anextensionofthefrequencyrangetothatfrom5MHzto3000MHzwillbeconsideredforfuturework.
【中国标准分类号】:M73
【国际标准分类号】:33_060_40
【页数】:100P.;A4
【正文语种】:英语