【英文标准名称】:Potentiometers;presetpotentiometers,leadscrewactuatedorrotary;termsanddefinitions,characteristics,methodsoftest
【原文标准名称】:电位计.导螺杆作动或直接旋转调节的预调电位计.术语、定义、特性和试验方法
【标准号】:DIN41450-1-1987
【标准状态】:作废
【国别】:德国
【发布日期】:1987-11
【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】:电气工程;电位器;可变电阻器;试验;定义;测量;规范(审批);电阻器
【英文主题词】:Definition;Definitions;Electricalengineering;Measurement;Potentiometers(resistors);Resistors;Specification(approval);Testing;Variableresistors
【摘要】:Thisstandarddealswithadditionaldeterminationsofleadscrewactuatedorrotarypresetpotentiometers,terms,definitions,characteristicsandmethodsoftestswhicharenotincludedinCECC41000andCECC41100.#,,#
【中国标准分类号】:L14
【国际标准分类号】:31_040_20
【页数】:3P;A4
【正文语种】:德语


【英文标准名称】:StandardPracticeforMakingandCuringConcreteTestSpecimensintheLaboratory
【原文标准名称】:实验室中混凝土试样制备和养护的标准实施规程
【标准号】:ASTMC192/C192M-2007
【标准状态】:现行
【国别】:美国
【发布日期】:2007
【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】:C09.61
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:concrete;cylinders;laboratory;prisms;strengthtesting
【摘要】:Thispracticeprovidesstandardizedrequirementsforpreparationofmaterials,mixingconcrete,andmakingandcuringconcretetestspecimensunderlaboratoryconditions.Ifspecimenpreparationiscontrolledasstipulatedherein,thespecimensmaybeusedtodevelopinformationforthefollowingpurposes:3.2.1Mixtureproportioningforprojectconcrete,3.2.2Evaluationofdifferentmixturesandmaterials,3.2.3Correlationwithnondestructivetests,and3.2.4Providingspecimensforresearchpurposes.Note18212;Theconcretetestresultsforconcretespecimensmadeandcuredusingthispracticearewidelyused.Theymaybethebasisforacceptancetestingforprojectconcrete,researchevaluations,andotherstudies.Carefulandknowledgeablehandlingofmaterials,mixingconcrete,moldingtestspecimens,andcuringtestspecimensisnecessary.Manylaboratoriesperformingthisimportantworkareindependentlyinspectedoraccredited.PracticeC1077identifiesanddefinesduties,responsibilities,includingminimumresponsibilitiesofthelaboratorypersonnelandminimumtechnicalrequirementsforlaboratoryequipmentused.ManylaboratoriesensurequalifiedtechniciansbyparticipatinginnationalcertificationprogramssuchastheAmericanConcreteInstituteLaboratoryTechnicianProgramoranequivalentprogram.1.1Thispracticecoversproceduresformakingandcuringtestspecimensofconcreteinthelaboratoryunderaccuratecontrolofmaterialsandtestconditionsusingconcretethatcanbeconsolidatedbyroddingorvibrationasdescribedherein.1.2Thevaluesstatedineitherinch-poundunitsorSIunitsshallberegardedseparatelyasstandard.TheSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemshallbeusedindependentlyofeachother.Combiningvaluesfromthetwosystemsmayresultinnonconformance.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(Warning-Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoexposedskinandtissueuponprolongedexposure.)
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:8P.;A4
【正文语种】:英语