【英文标准名称】:StructuralsteelIandHsections;tolerancesonshapeanddimensions;GermanversionEN10034:1993
【原文标准名称】:I型和H型结构钢.形状和尺寸公差
【标准号】:EN10034-1993
【标准状态】:现行
【国别】:
【发布日期】:1994-03
【实施或试行日期】:
【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】:形状;尺寸;公差;热轧的;外行尺寸;钢;工形梁;外形;极限尺寸;偏差;横断面;工字梁型材;牙型;极限偏差;重量;平直度;砝码;形状公差;长度
【英文主题词】:Crosssections;Deviations;Dimensionaltolerances;Dimensions;Formtolerances;Hotrolled;I-beamsections;I-Beams;Length;Limitdeviations;Limitdimensions;Profile;Profiledimension;Profiles;Shape;Steelproducts;Steelsections;Steels;Straightness;Structuralsteels;Tolerances(measurement);Weights
【摘要】:
【中国标准分类号】:H44
【国际标准分类号】:77_140_70
【页数】:8P.;A4
【正文语种】:英语
基本信息
标准名称: | 道岔护轨中部间隔铁 |
中标分类: |
铁路 >>
铁路建筑设备 >>
道岔与钢轨伸缩器 |
替代情况: | TB 439-1964 |
发布日期: | |
实施日期: | 2003-10-01 |
首发日期: | |
作废日期: | |
出版日期: | |
页数: | 2页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类: 铁路 铁路建筑设备 道岔与钢轨伸缩器
【英文标准名称】:StandardTestMethodforDissipationFactorandPermittivity(DielectricConstant)ofMica
【原文标准名称】:云母耗散因数和电容率(介电常数)的标准试验方法
【标准号】:ASTMD1082-2000(2005)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:D09.19
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:dissipationfactor;mica;permittivity
【摘要】:Thedissipationfactorofnaturalmuscovitemica,asdeterminedbythistestmethod,isofpracticalimportanceasameasureoftheelectricalenergylostasheatinthemicaservingasthedielectricsubstanceofcapacitors,orinotherapplicationsinwhichtheelectricfieldisappliedperpendiculartotheplaneofcleavage.Thedissipationfactorisparticularlyimportantinapplicationsusingmicaatradiofrequenciesandinsomelessextensiveaudiofrequencyapplications.Thistestmethodissuitableforspecificationacceptanceanddielectric-losscontroltests(SeetheSignificanceandUseofTestMethodsD150).RelativePermittivity(DielectricConstant)8212;Thepermittivityofnaturalmuscovitemicaisameasureofitsrelativeabilitytostoreelectrostaticenergy.Sincetherelativepermittivityperpendiculartothecleavageplaneisfairlyuniform,regardlessoforigin,itspracticalsignificanceismainlyforidentificationpurposes,specialuses,research,anddesign.Ifalossindexisdesired,thevalueofthepermittivitymustbeknown(seetheSignificanceandUseofTestMethodsD150).1.1Thistestmethodcoversthedeterminationofthedissipationfactorandtherelativepermittivityofnaturalblockmicahavingthicknessesbetween0.007and0.030in.(0.18and0.77mm)andmicafilmsorcapacitorsplitsbetween0.0008and0.004in.(0.02and0.10mm)inthickness.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationpurposesonly.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.AspecificwarningstatementisgiveninSectionand.Note1ProceduresforthemeasurementofdissipationfactorandpermittivityaregiveninIECPublication60371-2,butthedetailsoftheprocedurearesomewhatdifferentfromthosespecifiedinthistestmethod.
【中国标准分类号】:K15
【国际标准分类号】:73_080
【页数】:3P.;A4
【正文语种】: