EN 60835-2-11-1997 数字微波无线电传输系统设备的测量方法.第2部分:地面无线电中继系统测量.第11节:交叉极化干扰消除器

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【英文标准名称】:Methodsofmeasurementforequipmentusedindigitalmicrowaveradiotransmissionsystems-Part2:Measurementsonterrestrialradio-relaysystems;section11:Cross-polarizationinterferencecanceller(IEC60835-2-11:1996);GermanversionEN60835-2-11:1
【原文标准名称】:数字微波无线电传输系统设备的测量方法.第2部分:地面无线电中继系统测量.第11节:交叉极化干扰消除器
【标准号】:EN60835-2-11-1997
【标准状态】:现行
【国别】:
【发布日期】:1997-07
【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】:偏振;试验条件;交叉极化鉴别;陆地的;横向极化;地面站;接收机;电信;阻抗;水准仪;传输系统;微波;微波链路;无线电中继系统;卫星通信;卫星通信链路;放大;无线电通信;电压;测量;调制;调制类型;测量技术;通信链路;发射机;电信;性能;电信系统;电气工程;无线电工程;信号传输
【英文主题词】:Amplification;Crosspolarisation;Cross-polardiscrimination;Digitalengineering;Digitalsignals;Earthstations;Electricalengineering;Impedance;Levels;Measurement;Measuringtechniques;Microwavelinks;Microwaves;Modulation;Performance;Polarization(wavephysics);Radioengineering;Radioequipment;Radiosystems;Radiocommunication;Radio-relaysystems;Receivers;Satellitecommunications;Satellitelinks;Signaltransmission;Telecommunication;Telecommunicationlinks;Telecommunicationsystems;Telecommunications;Terrestrial;Testingconditions;Transmissionsystems;Transmitters;Transmittingset;Typeofmodulation;Voltage
【摘要】:
【中国标准分类号】:M34
【国际标准分类号】:33_060_30
【页数】:13P.;A4
【正文语种】:英语


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【英文标准名称】:StandardPracticeforStorageTestingofAerosolProducts
【原文标准名称】:气溶胶制品存储检验的标准操作规程
【标准号】:ASTMD3090-1972(2003)
【标准状态】:现行
【国别】:
【发布日期】:1972
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D10.33
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:包装;气溶胶;包装件;存储试验;工艺
【英文主题词】:aerosolproducts;aerosolproductsstorage;shelf-lifeofaerosolpackaging;storagetesting;storagetestingaerosolproducts;
【摘要】:Aerosolproductsaresubjectedtostorageteststoascertaintheshelf-lifeofthecompletepackage,andtoevaluatethedegreeofsuitabilityofthevalveandcontainercomponentsfortheirintendeduses.Itisimpracticaltopromulgateastandardprocedureforconductingstoragetests,sincevariationswillbenecessitatedbydifferencesintheultimateobjective(forexample,theprimaryinterestofonetestmaybeconcernedwithcontainersuitabilityorshelf-lifeofanewproductinanexistingpackage,whileanothertestmaybeconcernedwithvalveevaluation).Itfollowsthatstoragetestingmustbeflexibleenoughtoaccommodatethesmallproceduralchangesrequired.Thus,thisrecommendedpracticewillonlysetforththoseprinciplestobeobservedinestablishingadefiniteprocedure,inordertoallowtheindividualoperatortheprerogativeofadaptingthesetosatisfyhisparticularrequirements.1.1Thispracticecoversthestoragetestingofaerosolproducts.1.2Therearetwomajortypesofstorageteststhatmaybeperformedonaerosolproducts:1.2.1LiveStorageTestswherethevalvesareactuatedandthedeterminationsaremadeatrelativelyfrequentintervals(thepurposebeingtosimulateconsumeruseofaerosoldispensers),and1.2.2DeadStorageTestsperformedtosimulatewarehousestorageconditionswhenshelf-lifeinformationissought.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,seeSection4.
【中国标准分类号】:A80
【国际标准分类号】:55_130
【页数】:4P.;A4
【正文语种】:


【英文标准名称】:Petroleumproducts.Determinationofash
【原文标准名称】:石油产品.灰分的测定
【标准号】:BSENISO6245-1996
【标准状态】:作废
【国别】:英国
【发布日期】:1996-02-15
【实施或试行日期】:1996-02-15
【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】:石油产品;重量分析;渣油;燃料油;油;石油;液体燃料;矿物蜡;灰分测定;蜡;润滑油;润滑剂;矿物油;燃烧试验法;化学分析和试验;含量测定;精密度
【英文主题词】:
【摘要】:
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:10P;A4
【正文语种】:英语