ASTM D 4935-1999 测量平面材料电磁屏蔽效率的标准试验方法
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来源:标准资料网
【英文标准名称】:StandardTestMethodforMeasuringtheElectromagneticShieldingEffectivenessofPlanarMaterials
【原文标准名称】:测量平面材料电磁屏蔽效率的标准试验方法
【标准号】:ASTMD4935-1999
【标准状态】:作废
【国别】:美国
【发布日期】:1999
【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】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:电磁场;电气工程;防护屏蔽;试验
【英文主题词】:testing;electricalengineering;electromagneticfields;shields
【摘要】:
【中国标准分类号】:K04
【国际标准分类号】:17_220_20
【页数】:10P;A4
【正文语种】:英语
Product Code:SAE AS414
Title:Temperature Instruments (Turbine Powered Subsonic Aircraft) (NONCURRENT Nov 1996)
Issuing Committee:A-4 Aircraft Instruments Committee
Scope:This SAE Aerospace Standard (AS) covers two basic types of temperature instruments as follows: type I: ratiometer type, actuated by changes in electrical resistance of a temperature sensing electrical resistance element; the resistance changes being obtained by temperature changes of the temperature sensing resistance element. Type II: millivoltmeter type, operated and actuated by varying EMF output of a thermocouple; the varying EMF input to the instrument being obtained by temperature changes of the temperature sensing thermocouple.【英文标准名称】:Waterquality-Sampling-Guidanceonsamplingofriversandstreams
【原文标准名称】:水质.取样.河流和小溪水取样指南
【标准号】:BSISO5667-6-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2006-01-16
【实施或试行日期】:2006-01-16
【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】:定义;淡水;质量;河流;流水;抽样方法;水;水质
【英文主题词】:Definitions;Freshwater;Quality;Rivers;Runningwaters;Samplingmethods;Water;Waterquality
【摘要】:ThispartofISO5667setsouttheprinciplestobeappliedtothedesignofsamplingprogrammes,samplingtechniquesandthehandlingofwatersamplesfromriversandstreamsforphysicalandchemicalassessment.Itisnotapplicabletothesamplingofestuarineorcoastalwatersandhaslimitedapplicabilitytomicrobiologicalsampling.NOTEProceduresformicrobiologicalsamplingaregiveninISO19458.ThispartofISO5667isnotapplicabletotheexaminationofsediment,suspendedsolidsorbiota.Incaseswherenaturallyoccurringorartificiallyconstructeddamsresultintheretentionorstorageofwaterforseveraldaysormore,itmightbebettertoconsiderthestretchoftheriverorstreamasastandingwaterbodyforsamplingpurposes.ISO5667-4providesguidanceforsamplinginthesecircumstances.WARNING—ThefocusofthispartofISO5667isthecollectionandintegrityofwatersamples.Thecollectionofthesesamplescanbehazardousandattentionisthereforedrawntotheexistenceinsomecountriesoflegislativerequirementsforthesafetyofpersonnel.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_45
【页数】:28P.;A4
【正文语种】:英语
