DIN 49573-1984 电信技术.键和键条.要求.检验
时间:2024-05-10 14:12:39 来源: 标准资料网 作者：标准资料网 阅读：9444
【英文标准名称】:Electricalcommunicationengineering;keysandkey-strips;requirements,tests
【原文标准名称】:电信技术.键和键条.要求.检验
【标准号】:DIN49573-1984
【标准状态】:作废
【国别】:德国
【发布日期】:1984-09
【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】:键盘;传播技术;电信;键(键盘);规范(审批);试验;材料;电气工程;寿命;钥匙;尺寸;电键排;电触点;耐久性;插座触点
【英文主题词】:electricsocketcontacts;dimensions;keys;keys(keyboards);testing;keystrips;electricalengineering;communicationtechnology;keyboards;life(durability);specification(approval);electriccontacts;dura
【摘要】:
【中国标准分类号】:L22
【国际标准分类号】:1920
【页数】:4P;A4
【正文语种】:德语
【英文标准名称】:Screwthreads-Standardpracticeforcalculatingandroundingdimensions
【原文标准名称】:螺纹.尺寸计算和舍入标准规程
【标准号】:ASMEB1.30M-1992
【标准状态】:作废
【国别】:美国
【发布日期】:1992
【实施或试行日期】:
【发布单位】:美国机械工程师协会(ASME)
【起草单位】:ASME
【标准类型】:()
【标准水平】:()
【中文主题词】:米制螺纹;螺纹;螺纹;MJ螺纹;数值修约;尺寸公差;尺寸;螺钉;计算方法;计算方法
【英文主题词】:dimensions;screws(bolts);threads;metricscrewthreads;dimensionaltolerances;calculatingmethods;rounding(numbers);mj-threads;screwthreads;methodsofcalculation
【摘要】:
【中国标准分类号】:J04
【国际标准分类号】:21_040_10
【页数】:23P;A4
【正文语种】:英语
【英文标准名称】:StandardSpecificationforLaboratoryGlassVolumetricFlasks
【原文标准名称】:实验室用玻璃量瓶标准规范
【标准号】:ASTME288-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E41.01
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:flasks;glass;volumetric;Flasks(laboratory)--specifications;Glasslaboratoryapparatus--specifications;Laboratoryapparatus--specifications;Laboratoryvolumetricapparatus;Volumetriclaboratoryapparatus
【摘要】:1.1Thisspecificationcoversrequirementsforglassvolumetricflasksofprecisionandgeneral-purposegradessuitableforlaboratorypurposes.1.1.1ClassA8212;Eachflaskofprecisiongradeshallbemarkedwiththeletterx201C;Ax201D;tosignifycompliancewithapplicableconstructionandaccuracyrequirements.Flasksmaybemarkedwithanidentificationnumber(serialnumber)attheoptionofthemanufacturer.1.1.2ClassB8212;GeneralpurposeflasksareofthesamebasicdesignasClassAflasks.However,volumetrictolerancesforClassBflasksshallbewithintwicethespecifiedrangeallowedforClassAflasks.Theseflasksneednotbemarkedwiththeirclassdesignation.Note18212;Specificationsformicrovolumetricflasksinsizesfrom1mLto25mL,inclusive,aregiveninSpecificationE237.Note28212;TheTwelfthGeneral(International)ConferenceonWeightsandMeasuresredefinedthelitreasax201C;specialnameforthecubicdecimetre,x201D;butagreedtopermitcontinuanceofthetermslitre,millilitre,andmL,exceptinassociationwithmeasurementsofthehighestprecision.Forvolumetricglasswarethedifferencebetweentheoldandnewmeaningsoflitreisnegligible.Therefore,eithermLorcm3maybemarkedonwarecoveredbythisSpecification.1.1.3SpecialSizeFlasks8212;Precisiongradeflasksmaybemanufacturedwithnominalcapacitiesnotlistedinthisstandard.Suchflasksshallbeconsideredx201C;ClassAx201D;flasks,providedtheymeettheaccuracytoleranceofthenextlargestx201C;ClassAx201D;flaskappearinginTable1andcomplywiththemarkingrequirementsof1.1.1.1.1.4Wide-MouthFlasks8212;Requirementsforinsertionoftabletsorcapsulesforassaydilutionandtoaccommodateaccessoflargerdiameterpipetsrequirevolumetricflaskswithlargernecks.TheseflasksappearinTable2.Theseflasksshallconformtothemarkingrequirementsof1.1.1.Additionally,theaccuracytoleranceshallbemarkedoneachx201C;ClassAx201D;wide-mouthflask.1.1.5SpecialSizeWide-MouthFlasks8212;Precisiongradewide-mouthflasksmaybemanufacturedwithnominalcapacitiesnotlistedinthisstandard.Suchflasksshallbeconsideredx201C;ClassAx201D;flasksprovidedtheymeettheaccuracytoleranceofthenextlargestx201C;ClassAx201D;wide-mouthflaskappearinginTable2andthemarkingrequirementsof1.1.4.
【中国标准分类号】:N64
【国际标准分类号】:71_040_20
【页数】:3P.;A4
【正文语种】:英语