【英文标准名称】:Connectorsforelectronicequipment-Testsandmeasurements-Part25-7:Test25g-Impedance,reflectioncoefficientandstandingvoltagewaveratio(VSWR)(IEC60512-25-7:2004);GermanversionEN60512-25-7:2005
【原文标准名称】:电子设备连接器.试验和测量.第25-7部分:试验25g:阻抗、反射系数和电压驻波比(VSWR)(IEC60512-25-7-2004);德文版本EN60512-25-7-2005
【标准号】:EN60512-25-7-2005
【标准状态】:现行
【国别】:
【发布日期】:2005-12
【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】:元部件;定义;电连接器;电插头;电气工程;机电学;电子工程;电子设备;电子设备及元件;电子仪器;过滤器;阻抗;测量技术;多语种的;反射系数;应力率;试验
【英文主题词】:Components;Definition;Definitions;Electricconnectors;Electricplugs;Electricalengineering;Electromechanics;Electronicengineering;Electronicequipment;Electronicequipmentandcomponents;Electronicinstruments;Filters;Impedance;Measuringtechniques;Multilingual;Reflectioncoefficient;Stressrate;Testing;Tests
【摘要】:
【中国标准分类号】:L23
【国际标准分类号】:31_220_10
【页数】:34P.;A4
【正文语种】:英语


【英文标准名称】:StandardGuideforSelectionofCleaningTechniquesforMasonry,Concrete,andStuccoSurfaces
【原文标准名称】:砂浆、混凝土和拉毛粉刷面清洁技术选择的标准指南
【标准号】:ASTME1857-1997(2004)
【标准状态】:现行
【国别】:
【发布日期】:1997
【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】:E06.24
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:大理石;表面处理;拉毛粉刷;清洁处理;化学清洗;花岗岩;砂岩;混凝土;水清洗;砖石工程;建筑;研磨清洗;石材尺寸
【英文主题词】:abrasivecleaning;chemicalcleaning;concrete;dimensionstone;granite;marble;masonry;sandstone;stucco;watercleaning
【摘要】:Cleaningofmasonry,concrete,andstuccosurfacesisundertakenforavarietyofreasonsincludingaestheticimprovement,removalofcontaminants,maintenance,andsurfacepreparation.Thisguideprovidesforselecting,testing,andevaluatingcleaningtechniquesforremovalofsoilingandstaining.Cleaningsystemsmayadverselyaffectbothbuildingmaterialsbeingcleanedaswellasothermaterials,mechanical,electrical,andotherbuildingsystems,andbuildingexterior,interior,andsitefeatures.Insomesituations,itmaybeprudenttospotcleanortonotclean.Itshouldbenotedthat,insomecases,cleaningmaybeinconsistentwiththegoalsofhistoricpreservation.1.1Thisguideoutlinesproceduresfortheselectionandassessmentofcleaningtechniquesforremovingsoilingandstainingfrommasonry,concrete,andstuccosurfaces.Removalofpaints,coatings,andgraffitimayrequiremeasuresbeyondthescopeofthisguide.Newconstructionisexcludedfromthescopeofthisguide.1.2Thisguidedoesnotpurporttoaddressthecausesofsoilingorstainingortoproposeremediesforrecurringsoilingorstaining.1.3Whereworkonsurfacesofartistic,architectural,cultural,orhistoricsignificanceisbeingconsidered,guidancefromspecialistsshouldbesought.1.4Thisguidedoesnotpurporttoaddressremovalandreplacementofpriorrepairs,repairofdamagedsurfaces,orotherirregularitiesthatcontributetotheunevenordiscoloredappearanceofmasonry,concrete,andstuccosurfaces.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P32
【国际标准分类号】:03_080_10
【页数】:5P.;A4
【正文语种】: