MIL-N-48263
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来源:标准资料网
MIL-N-48263, MILITARY SPECIFICATION, 1-NITRO -2- PROPANOL (NPL) (2 MAR 1974)., This specification covers one grade of 1-Nitro -2- Propanol (NPL) for use in liquid propellants.
【英文标准名称】:Electromagneticcompatibility(EMC)-Part2:Environment-Section7:Lowfrequencymagneticfieldsinvariousenvironments
【原文标准名称】:电磁兼容性(EMC).第2部分:环境.第7节:在各种环境下的低频磁场
【标准号】:IEC/TR61000-2-7-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-01
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC77A
【标准类型】:()
【标准水平】:()
【中文主题词】:电磁兼容性;电磁兼容性;电磁脉冲;环境影响;低频;电磁干扰;电气工程;磁场;无线电干扰
【英文主题词】:Electricalengineering;Electromagneticcompatibility;Electromagneticinterferences;Electromagneticpulse;EMC;Environmentaleffects;Lowfrequencies;Magneticfields;Radiointerferences
【摘要】:Interestinmagneticfieldshasbeenstimulatedinrecentyearsbyconcernoverthephysiologicaleffectstheymayhaveonhumansandanimalsandthedeleteriouseffectstheyhaveontheperformanceofsomeelectricalequipment,particularlyvideodisplayunits.Investigationshaveyieldedresultswhicharepresentedinthisreportasreferencevalues.Note1-TheEuropeanUnionEMCDirectivehaspromptedmagneticfieldmeasurements,particularlyinrespectofthecommercialofficeenvironmentsassociatedwithsupplyauthoritysubstationsandelectricaldistributionsystemswithinbuildings.Supplyauthoritieshavesponsoredmostoftheworkandtheresultsaregenerallywithinthefrequencyrangeof50Hzto2kHz,andpresentedasr.m.s,values.Thereis,however,aneedtohavesomeknowledgeaboutd.c.fieldsandthefieldsupto150kHzastheymayinterferewithsometypesofequipment.Note2-Mostofthemagneticfielddatainthisreportisassociatedwithsinusoidalcurrentsourcesandr.m.s,valuesmaybeassumedunlessotherwisestated.Powersupplysystemsoperatingatvoltageslessthanorequalto1000Varedesignatedlow-voltage,thoseabove1000Vandupto35kVaredesignatedmedium-voltage,andthoseinexcessof35kVaredesignatedhigh-voltage.
【中国标准分类号】:L06
【国际标准分类号】:33_100_10
【页数】:69P;A4
【正文语种】:英语
【英文标准名称】:InstallingCorrugatedAluminumStructuralPlatePipeforCulvertsandSewers
【原文标准名称】:涵洞和下水道用波纹铝结构板管的安装
【标准号】:ASTMB789-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【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】:有色金属;排水管;装置;金属;涵洞;铝;管;下水道;板;结构管
【英文主题词】:aluminium;sewers;installations;structuralpipes;culverts;metals;plates;non-ferrousmetals;drainpipes;pipes
【摘要】:
【中国标准分类号】:P94
【国际标准分类号】:13_060_30;77_120_10
【页数】:
【正文语种】:英语
