NF C93-878-3-1-2007 光纤通信系统用无源元件.产品规范.第3-1部分:端接在IEC60793-2-50类B1.1和B1.3单模纤维上的类型100/200GHzDWDM模数
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【英文标准名称】:Passivecomponentstobeusedinopticalfibrecommunicationsystems-Productspecifications-Part3-1:type:100/200GHzDWDMmoduleterminatedonIEC60793-2-50categoryB1.1andB1.3singlemodefibre.
【原文标准名称】:光纤通信系统用无源元件.产品规范.第3-1部分:端接在IEC60793-2-50类B1.1和B1.3单模纤维上的类型100/200GHzDWDM模数
【标准号】:NFC93-878-3-1-2007
【标准状态】:现行
【国别】:法国
【发布日期】:2007-11-01
【实施或试行日期】:2007-11-10
【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】:空白格式;通信系统;连接工艺;连接器的连接件;连接器;尺寸;电插头;电气工程;光纤;作标记;测量;模数;单模纤维;光波导;无源的;工作性能;产品标准;质量;规范(验收);测试;型式
【英文主题词】:
【摘要】:
【中国标准分类号】:M33
【国际标准分类号】:33_180_20
【页数】:22P;A4
【正文语种】:其他
【英文标准名称】:Conveyorbelts-Laboratoryscaleflammabilitycharacteristics-Requirementsandtestmethod(ISO340:2004);EnglishversionofDINENISO340:2007-06
【原文标准名称】:输送带.实验室范围易燃性.要求和试验方法
【标准号】:DINENISO340-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-06
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:带式输送机;输送带;定义;评估;耐火性;燃烧试验;易燃性;几乎不可燃的;实验室测试;作标记;物料搬运设备;采掘;采掘设备;动力传送带;安全;安全工程;抽样方法;规范(验收);规范;钢绳;钢带输送机;钢丝绳;火焰表面传播;试验设备;测试;试验;织物层
【英文主题词】:
【摘要】:ThisInternationalStandardspecifiesamethodforassessing,onasmallscale,thereactionofaconveyorbelttoanignitionflamesource.Itisapplicabletoconveyorbeltshavingatextilecarcassaswellassteelcordconveyorbelts.
【中国标准分类号】:J81
【国际标准分类号】:13_220_40;53_040_20
【页数】:12P;A4
【正文语种】:英语
【英文标准名称】:SpecificationforReagentWater
【原文标准名称】:化学试剂水规范
【标准号】:ANSI/ASTMD1193-1999
【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】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:化学试剂;药液;试剂;水
【英文主题词】:Chemicalreagents;Chemicals;Reagents;Water
【摘要】:Thisspecificationcoversrequirementsforwatersuitableforuseinmethodsofchemicalanalysisandphysicaltesting.Fourgradesarespecified:TypeITypeIITypeIIITypeIVElectricalconductivity,max,?S/cmat298K(25?C)0.0561.00.255.0Electricalresistivity,min,Mcmat298K(25?C)181.04.00.2pHat298K(25?C)AAA5.0to8.0Totalorganiccarbon(TOC),max,?g/L5050200nolimitSodium,max,?g/L151050Chlorides,max,?g/L151050Totalsilica,max,?g/L33500nolimitMicrobiologicalcontamination-Whenbacteriallevelsneedtobecontrolled,reagentgradetypesshouldbefurtherclassifiedasfollows:TypeATypeBTypeCMaximumheterotrophicbacteriacount10/1000mL10/100mL100/10mLEndotoxin,EU/mlB0.030.25notapplicableAThemeasurementofpHinTypeI,II,andIIIreagentwatershasbeeneliminatedfromthisspecificationbecausethesegradesofwaterdonotcontainconstituentsinsufficientquantitytosignificantlyalterthepH.BEU=EndotoxinUnits.Themethodofpreparationofthevariousgradesofreagentwaterdeterminesthelimitsofimpuritiesandshallbeasfollows:TypeIgradeofreagentwatershallbepreparedbydistillationorotherequalprocess,followedbypolishingwithamixedbedofionexchangematerialsanda0.2-?mmembranefilter.Feedwatertothefinalpolishingstepmusthaveamaximumconductivityof20?S/cmat298K(25?C).TypeIIgradeofreagentwatershallbepreparedbydistillationusingastilldesignedtoproduceadistillatehavingaconductivityoflessthan1.0?S/cmat298K(25?C).Ionexchange,distillation,orreverseosmosisandorganicadsorptionmayberequiredpriortodistillationifthepuritycannotbeattainedbysingledistillation.Note1-Becausedistillationisaprocesscommonlyreliedupontoproducehighpuritywater,thelevelsspecifiedforTypeIIreagentwaterwereselectedtorepresenttheminimumqualityofwaterthatadistillationprocessshouldproduce.TypeIIIgradeofreagentwatershallbepreparedbydistillation,ionexchange,continuouselectrodeionizationreverseosmosis,oracombinationthereof,followedbypolishingwitha0.45-?mmembranefilter.1.2.4TypeIVgradeofreagentwatermaybepreparedbydistillation,ionexchange,continuouselectrodeionizationreverseosmosis,electrodialysis,oracombinationthereof.Thechoiceofoneofthevariousgradesmaybedesignatedbythemethodorbytheinvestigator.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G77
【国际标准分类号】:71_040_30
【页数】:
【正文语种】:英语