【英文标准名称】:DTU40-45.Buildingworks.Roofcoveringmadeofcoppersheetandlongsheet.Part1:technicalspecifications.
【原文标准名称】:DTU40-45.建筑工程.铜板和长形板制屋顶覆盖物.第1部分:技术规范
【标准号】:NFP34-215-1-1993
【标准状态】:现行
【国别】:法国
【发布日期】:1993-05-01
【实施或试行日期】:1993-05-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:Q73
【国际标准分类号】:91_060_20
【页数】:52P;A4
【正文语种】:其他
基本信息
标准名称: | 对称电缆60路载波电话设备主要性能的测试方法 |
英文名称: | The test methods for 60-channel symmetrical cable carrier telephone equipment |
中标分类: |
通信、广播 >>
通信设备 >>
载波通信设备 |
发布日期: | 1984-11-28 |
实施日期: | 1985-10-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
起草单位: | 邮电部标准化所 |
出版日期: | 1900-01-01 |
页数: | 34页 |
适用范围
没有内容
前言
没有内容
目录
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引用标准
没有内容
所属分类: 通信 广播 通信设备 载波通信设备
【英文标准名称】:Airquality-Testmethodforfiltrationcharacterizationofcleanablefiltermedia
【原文标准名称】:空气质量.可清洗过滤介质的过滤特性的试验方法
【标准号】:ISO11057-2011
【标准状态】:现行
【国别】:国际
【发布日期】:2011-05-15
【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/TC146
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Aerosols;Airfilters;Airpurification;Airquality;Air-conditioningsystems;Cleanability;Clean-roomtechnology;Definitions;Efficiency;Filterelements;Filteringmaterials;Filters;Filtration;Filtrationbehaviour;Flows;High-efficiencysubmicronparticulateairfilters;Measurement;Measuringtechniques;Media;Methodsformeasuring;Particlefilters;Particlesize;Particles;Particulateairpollutants;Testing;Testingdevices;Ventilationequipment
【摘要】:ThisInternationalStandardspecifiesastandardreferencetestmethodforthecomparativecharacterizationofpulse-jetcleanablefiltermedia,tobeusedinfilterelements(e.g.bagfilters,pocketfilters,cartridgefilters)appliedindrygascleaningunderstandardizedtestconditions.Themainpurposeoftestingistogaininformationaboutboththeoperationalperformanceandtheparticleemissionofcleanablefiltermedia.Itshouldbenotedthatwhileonetestapparatusandoperatingmethodhasbeenchosenanddescribedherein,itisrecognizedthatotherapparatusandoperatingarrangementscanbefoundacceptable.Inorderforacandidateapparatustobecomeanequivalentapparatus,acomparisonhastobeperformedwiththestandardreferenceapparatusaccordingtoaspecifiedprocedure(6.1).Thetestprocedure,thecharacteristicsoftherequiredtestfacility,andthetestconditions,aswellastheevaluationandpresentationoftheresults,arespecified.Theresultsobtainedfromthistestmethodarenotintendedforpredictionoftheabsoluteperformanceoffullscalefilterfacilities.However,theyarehelpfulfortheselectionanddevelopmentofappropriatecleanablefiltermediaandtheidentificationofsuitableoperatingparameters.AdditionaltaskssuchasverifyingfiltermediaconcerningPMemissions,theclassificationofdifferentmediaaccordingtotheirfiltrationperformanceorthecleanabilityanddurabilityoffilterelements(i.e.projectionofbaglifetime)canbeaddressedusingthetestmethodspecified.
【中国标准分类号】:Z60
【国际标准分类号】:13_040_40
【页数】:38P.;A4
【正文语种】:英语