MIL-DTL-17H
时间:2024-05-06 03:13:18 来源: 标准资料网 作者：标准资料网 阅读：8799
MIL-DTL-17H, DETAIL SPECIFICATION: CABLES, RADIO FREQUENCY, FLEXIBLE AND SEMIRIGID, GENERATION SPECIFICATION FOR (04 AUG 2006) [SUPERSEDING MIL-C-17G]., This specification covers flexible and semirigid cables with solid and semisolid dielectric cores, with single, dual and twin inner conductors. Cables covered by this specification are primarily intended for use as transmission lines to conduct energy in a simple power transfer continuously or intermittently. In general, these cables are designed for low-loss, stable operation from the relatively low frequencies through the higher frequencies in the microwave and radar regions of the frequency spectrum. Cables may also be used as circuit elements, delay lines or impedance matching devices. These cables are supplied under a reliability assurance program as specified in section 3.
【英文标准名称】:Capacitorsforpowerelectronics.
【原文标准名称】:电力电容器
【标准号】:NFC54-105-2007
【标准状态】:现行
【国别】:法国
【发布日期】:2007-11-01
【实施或试行日期】:2007-11-03
【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】:交流电流;电容器;定义;直流电流;电气工程;电子工程;电子设备及元件;作标记;操作频率;过载电流;过电压保护;并联接法;电力电容器;电力电子学;质量要求;额定电压;安全要求;串联;设备电压;规范(验收);测试
【英文主题词】:
【摘要】:
【中国标准分类号】:K42
【国际标准分类号】:31_060_70
【页数】:49P;A4
【正文语种】:其他
【英文标准名称】:StandardGuideforDeterminationofNeptunium-237inSoil
【原文标准名称】:土壤中镎237检测的标准指南
【标准号】:ASTMC1475-2005(2010)e1
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C26.05
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:alphaspectroscopy;americium-243;betacounting;extractionchromatography;gamma-rayspectroscopy;neptunium-239;neptunium-237determination;soilanalysis;Soil(radioactiveanalysis);Neptunium-237
【摘要】:Asoilsamplingandanalysisprogramprovidesadirectmeansofdeterminingtheconcentrationanddistributionofradionuclidesinsoil.Thepresenceandextentofneptunium-237isofparticularinterestbecauseitisoneofthemoremobiletransuranicsintermsofmigrationandplantuptake.Sincesoilisanintegratorandareservoironlong-livedradionuclides,andservesasanintermediaryinseveralpathwaysofpotentialimportancetohumans,knowledgeoftheconcentrationofneptunium-237insoilisessential.1.1Thisguidecoversthedeterminationofneptunium-237insoilbymeansofradiochemicalseparationsandalphaspectrometry.Thisguideprovidesoptionsintheselectionofsamplepreparation,separation,andmeasurement.Althoughneptunium-237isnotacomponentofglobalfallout,itisaproductofproductionreactorsandspentfuelprocessing.ThisguideisdesignedforanalysisoftengramsofsoilpreviouslycollectedandtreatedinaccordancewithPracticesC998andC999.Larger-sizesamplesofenvironmentalsoilmayalsobeanalyzed,aslongastheconcentrationsofinterferencessuchasuraniumandthoriumareatornearenvironmentalconcentrations.Dependingonthechoiceofasampledissolutionmethod,allchemicalformsofneptuniummaynotbecompletelysolubilized.Thisguideshouldallowthedeterminationofneptunium-237concentrationsfromsubbecquerelpergramlevelstoapplicablestandardsdependingoncounttime,samplesize,detectorefficiency,background,andtraceryield.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection8.
【中国标准分类号】:Z33
【国际标准分类号】:13_080_10
【页数】:4P.;A4
【正文语种】:英语