EN 60794-3-20-2009 光缆.第3-20部分:户外电缆.自立式架空通信光缆的系列规范(IEC60794-3-20:2009),德文版本EN60794-3-20:2009
时间:2024-05-17 03:17:35 来源: 标准资料网 作者：标准资料网 阅读：9943
【英文标准名称】:Opticalfibrecables-Part3-20:Outdoorcables-Familyspecificationforself-supportingaerialtelecommunicationcables(IEC60794-3-20:2009);GermanversionEN60794-3-20:2009
【原文标准名称】:光缆.第3-20部分:户外电缆.自立式架空通信光缆的系列规范(IEC60794-3-20:2009),德文版本EN60794-3-20:2009
【标准号】:EN60794-3-20-2009
【标准状态】:现行
【国别】:
【发布日期】:2009-11
【实施或试行日期】:2009-11-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Aerialcables;Cableconduits;Cables;Communicationcables;Computers;Design;Dimensions;Electriccables;Electricalengineering;External;Familyspecification;Fibreoptics;Glassfibrecables;Glassfibres;Informationprocessingsystems;Marking;Monomodefibres;Network;Opticalwaveguides;Outsidecables;Properties;Qualityassurance;Ratings;Specification;Specification(approval);Symbols;Telecommunication;Telecommunicationsystems;Telecommunications;Telephonenetworks;Testing;Waveguides
【摘要】:
【中国标准分类号】:M33
【国际标准分类号】:33_180_10
【页数】:27P.;A4
【正文语种】:英语
【英文标准名称】:EvaluatingtheUsefulnessofHerbicidesonSoybeans
【原文标准名称】:大豆除莠剂效力的评定
【标准号】:ASTME940-1991
【标准状态】:作废
【国别】:美国
【发布日期】:1991
【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】:评定;危险物质;污染控制;大豆;除莠剂
【英文主题词】:pollutioncontrol;evaluations;dangerousmaterials;soyabeans;herbicides
【摘要】:
【中国标准分类号】:G25
【国际标准分类号】:65_020_20
【页数】:4P;A4
【正文语种】:英语
【英文标准名称】:TestMethodsforSaponificationNumberofPetroleumProducts
【原文标准名称】:石油产品皂化值的试验方法
【标准号】:ANSI/ASTMD94-2007
【标准状态】:作废
【国别】:美国
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:润滑剂;石油产品;皂化值;测试
【英文主题词】:Lubricants;Petroleumproducts;Saponificationnumber;Testing
【摘要】:Thesetestmethodscoverthedeterminationoftheamountofconstituentsinpetroleumproductssuchaslubricants,additives,andtransmissionfluidsthatwillsaponifyundertheconditionsofthetest.Note1-StatementsdefiningthistestanditssignificancewhenappliedtoelectricalinsulatingoilsofmineraloriginwillbefoundinGuideD117.Experiencehasshownthatfortransformeroils,TestMethodD94,modifiedbyuseof0.1MKOHsolutionand0.1MHCl,ismoresuitable.Twotestmethodsaredescribed:MethodA-ColorIndicatorTitration(Sections6-13),andMethodB-PotentiometricTitration(Sections14-23).Becausecompoundsofsulfur,phosphorus,thehalogens,andcertainotherelementsthataresometimesaddedtopetroleumproductsalsoconsumealkaliandacids,theresultsobtainedindicatetheeffectoftheseextraneousmaterialsinadditiontothesaponifiablematerialpresent.Resultsonproductscontainingsuchmaterials,onusedinternal-combustion-enginecrankcaseoils,andonusedturbineoilsmustbeinterpretedwithcaution.Note2-Thematerialsreferredtoabove,whicharenotnormallyconsideredsaponifiablematter,includeinorganicorcertainorganicacids,mostnonalkalisoaps,andsoforth.Thepresenceofsuchmaterialsincreasesthesaponificationnumberabovethatoffattysaponifiablematerialsforwhichthetestmethodisprimarilyintended.Theodorofhydrogensulfideneartheendoftheback-titrationinthesaponificationtestisanindicationthatcertaintypesofreactivesulfurcompoundsarepresentinthesample.Inthecaseofotherreactivesulfur,chlorine,andphosphoruscompoundsandotherinterferingmaterials,nosimpleindicationisgivenduringthetest.Agravimetricdeterminationoftheactualamountoffattyacidsisprobablythemostreliablemethodforsuchcompounds.TestMethodsD128orIPMethod284/86canbeusedtodeterminefattyacidsgravimetrically.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSections6,7,8,10,15,16,17,and19.
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:
【正文语种】:英语