ASTM D 2239-1989 控制内径的聚乙烯(PE)塑料管(SIDR-PR)
时间:2024-05-18 13:42:21 来源: 标准资料网 作者：标准资料网 阅读：8089
【英文标准名称】:Polyethylene(PE)PlasticPipe(SIDR-PR)BasedonControlledInsideDiameter
【原文标准名称】:控制内径的聚乙烯(PE)塑料管(SIDR-PR)
【标准号】:ASTMD2239-1989
【标准状态】:作废
【国别】:美国
【发布日期】:1989
【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】:塑料;管;聚乙烯;直径;塑料制品;建筑;内径;塑料管;尺寸
【英文主题词】:pipes;plasticpipes;plastics;dimensions;diameter;construction;insidediameters;polyethylene;plasticsproducts
【摘要】:
【中国标准分类号】:G33
【国际标准分类号】:23_040_20
【页数】:6P;A4
【正文语种】:英语
MIL-S-44300, MILITARY SPECIFICATION: SKI, MILITARY, ALL TERRAIN (8 OCT 1987) [S/S BY A-A-55117]., This document covers a military ski.【英文标准名称】:Receivingantennasforsatellitebroadcasttransmissionsinthe11/12GHzband-Part1:Electricalmeasurements
【原文标准名称】:11/12GHz频带卫星广播传输接收天线第1部分:电气测量
【标准号】:IEC61114-1-1999
【标准状态】:现行
【国别】:国际
【发布日期】:1999-02
【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/TC100
【标准类型】:()
【标准水平】:()
【中文主题词】:广播;网络分析仪;接收天线;电气工程;电学测量;测量技术;卫星通信;卫星接收
【英文主题词】:Antennas;Broadcastengineering;Broadcasting;Definitions;Electricalengineering;Electricalmeasurement;Electricalmeasuringinstruments;Measurement;Measuringtechniques;Methodsformeasuring;Networkanalysers;Receptionantennae;Satellitecommunications;Satellitereception
【摘要】:ThispartofIEC61114appliestoindividualandcollectivereceivingantennasforsatellitebroadcasttransmissionsinthe11/12GHzband.Thisstandardmainlyappliestoparaboloidalreflectorantennas,whichincludeoffsetparaboloidalreflectorantennas,Cassegrainreflectorantennasandotherequivalenttypes.Italsoappliestoplanararrayantennas.However,thesupportingmastandtheradomearenotincludedinthisstandard.Thisstandardappliestothefollowingsixtypesofantennas.a)Antennaofasingleantennasystemtoreceivesignalsfromasinglesatellite1)linearlypolarizedsingle-beamantenna;2)circularlypolarizedsingle-beamantenna.b)Antennaofasingleantennasystemtoreceivesignalsfromtwoormorethantwosatellites1)linearlypolarizedmultiplebeamantenna;2)circularlypolarizedmultiplebeamantenna.c)Antennaofamultipleantennasystemtoreceivesignalsfromtwoormorethantwosatellites1)linearlypolarizedsystemofsingle-beamantenna;2)circularlypolarizedsystemofsingle-beamantenna.Typicalconfigurationsofthesesixtypesareillustratedinfigure1.TheobjectofthispartofIEC61114istodefinetheconditionsandmethodsofmeasurementtobeapplied.Thisstandarddoesnotspecifyperformancerequirements.ItisassumedthatforsomemeasurementstheSHFconverterwillberemovedfromtheantenna,leavingaccesstoanr.f.port.
【中国标准分类号】:M35
【国际标准分类号】:33_060_20
【页数】:93P.;A4
【正文语种】:英语