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DIN 38410-2 Bb.1-1990 德国检验水、废水和污泥的标准方法.水的生物-生态检验(M组).以深海底动植物群为基础的腐生生物指数的测定程序.文献分类

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【英文标准名称】:Germanstandardmethodsfortheexaminationofwater,wastewaterandsludge;biological-ecologicalexaminationofwaters(groupM);procedureforthedeterminationofthesaprobicindexonthebasisofbenthiccommunities(M2);classificationliterature
【原文标准名称】:德国检验水、废水和污泥的标准方法.水的生物-生态检验(M组).以深海底动植物群为基础的腐生生物指数的测定程序.文献分类
【标准号】:DIN38410-2Bb.1-1990
【标准状态】:作废
【国别】:德国
【发布日期】:1990-10
【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】:水常规(实验);测试;水;腐生生物指数;生物学;水域;文献目录;水质试验;生态学;溪;文献;质量;水常规;水质;水生生物学;标准方法
【英文主题词】:waters;quality;streams;ecology;saprobicindices;literature;biology;testing;aquaticbiology;water;waterquality;bibliographies;standardmethods;waterpractice;watertesting
【摘要】:
【中国标准分类号】:Z23;Z16
【国际标准分类号】:13_060_70
【页数】:9P;A4
【正文语种】:德语


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【英文标准名称】:Superconductivity-Part3:Criticalcurrentmeasurement;DCcriticalcurrentofAg-sheathedBi-2212andBi-2223oxidesuperconductors
【原文标准名称】:超导体第3部分:临界电流测量银-外膜铋-2212和铋-2223氧化物超导体的临界直流电流
【标准号】:IEC61788-3-2000
【标准状态】:作废
【国别】:国际
【发布日期】:2000-12
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC90
【标准类型】:()
【标准水平】:()
【中文主题词】:银;临界数据;测量;超导性;装箱;直流电流;长丝;成束导线;电流测量;电气工程;镀银;外套
【英文主题词】:Bundledconductors;Casing;Coats;Criticalitydata;Currentmeasurement;Directcurrent;Electricalengineering;Filament(textilefibre);Measurement;Silver;Silvercoating;Superconductivity;Superconductors
【摘要】:ThispartofIEC61788coversatestmethodforthedeterminationofthed.c.criticalcurrentofshortandstraightAg-orAgalloy-sheathedBi-2212andBi-2223oxidesuperconductorsthathaveamonolithicstructureandashapeofroundwireorflatorsquaretapecontainingmono-ormulticoresofoxides.Thismethodisintendedforusewithsuperconductorsthathavecriticalcurrentslessthan500Aandn-valueslargerthan5.Thetestiscarriedoutwithandwithoutapplyingexternalmagneticfields.Inthetestofthetapespecimeninmagneticfields,themagneticfieldsareparallelorperpendiculartothetapesurface.Thetestspecimenisimmersedeitherinaliquidheliumbathoraliquidnitrogenbathduringtesting.Deviationsfromthistestmethodthatareallowedforroutinetestsandotherspecificrestrictionsaregiveninthisstandard.Substantialpartsofthetestmethodcoveredinthisstandardareincommonwith,orsimilarto,thoseforNb3Sncompositesuperconductors(IEC61788-2).Specialfeaturesnewlyfoundforoxidesuperconductorsmaybeclassifiedintotwogroups.Thefirstgroupisspecifictooxidecompositesuperconductors,includingmechanicalfragilityoriginatingfromthepresenceofweaklinks,cryogengasbubbleformation,agingdegradation,magneticfluxflowandcreep,largeanisotropy,hysteresisincriticalcurrentwithmagneticfieldsweep,etc.Thesecondgroupisduetotheshortlengthofthespecimenusedinthestandard.Acriticalcurrentmeasurementonsuchaspecimenmayeasilypickupdifferentvoltagesignalsduetothermalelectromotiveforce,inductivevoltage,thermalnoise,currentredistribution,specimenmotionrelativetotheholder,etc.Currenttransfervoltagesmaybepresentduetotheshortdistancefromacurrentcontacttoavoltagetap.ShortspecimenlengthmayreducemechanicaltoleranceagainsttheLorentzforce,forexample,bypromotingtheformationofcryogengasbubbleswithinthecomposite.
【中国标准分类号】:L47
【国际标准分类号】:29_050
【页数】:21P;A4
【正文语种】:英语


【英文标准名称】:Borosilicateglass3.3.Properties
【原文标准名称】:3.3硼硅酸盐玻璃.性能
【标准号】:BSISO3585-1998
【标准状态】:现行
【国别】:英国
【发布日期】:1998-10-15
【实施或试行日期】:1998-10-15
【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】:耐酸性试验;弹性模量;热膨胀;粘度;耐热材料;耐碱试验;玻璃;导热性;比热;密度;抗拉强度;软化点;硼硅酸盐玻璃;耐水解;泊松比;耐化学性试验;实验室玻璃器皿
【英文主题词】:Borosilicateglass;Characteristics;Chemicalresistance;Glass;Glassfittings;Glasstubes;Glassware;Materials;Properties;Ratings;Resistance;Silicates;Specification(approval);Specifications
【摘要】:ThisInternationalStandardspecifiesthecharacteristicsofatypeofglassdesignated"borosilicateglass3.3"usedfortheconstructionoflaboratoryglassware,glassplant,pipelineandfittings.NOTE—AnnexAlistsrelatedInternationalStandards.
【中国标准分类号】:Q33
【国际标准分类号】:81_040_10
【页数】:10P.;A4
【正文语种】:英语