【英文标准名称】:Householdandsimilarelectricalappliances-Safety-Part2-25:Particularrequirementsformicrowaveovens,includingcombinationmicrowaveovens
【原文标准名称】:家用和类似用途电器.安全.第2-25部分:包括组合微波炉的微波炉特殊要求
【标准号】:IEC60335-2-25Edition5.1-2005
【标准状态】:作废
【国别】:国际
【发布日期】:2005-06
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC61B
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;电气器具;加热;防电击;家用;安全工程;家用电器;规范(验收);安全要求;电气安全;家用设备;灶具;微波灶;设计;微波;绝缘电阻;过载保护装置;耐久性;介电强度;危害;家用的;安全;机械安全;持久性;试验;材料强度;烹饪设备;微波炉;微波器件;组合设备;电气工程
【英文主题词】:Combinationapparatus;Cookingappliances;Cookingequipment;Definitions;Design;Dielectricstrength;Domestic;Durability;Electricappliances;Electrichouseholdappliance;Electrichouseholdappliances;Electricalengineering;Electricalhouseholdappliances;Electricalsafety;Hazards;Heating;Householdequipment;Householduse;Inscription;Insulatingresistance;Mechanicalsafety;Microwavedevices;Microwaveovens;Microwavestoves;Microwaves;Overloadprotection;Permanency;Protectionagainstelectricshocks;Safety;Safetyengineering;Safetyrequirements;Specification;Specification(approval);Strengthofmaterials;Testing
【摘要】:Dealswiththesafetyofmicrowaveovensforhouseholduse.Theratedvoltageislessthan250V.Italsodealswithcombinationmicrowaveovens.Forcommercialmicrovaveovens,seeIEC60335-2-90.
【中国标准分类号】:Y63
【国际标准分类号】:97_040_20
【页数】:62P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforDensityofPolyethylenebytheUltrasoundTechnique
【原文标准名称】:用超声波技术测定聚乙烯密度的标准试验方法
【标准号】:ASTMD4883-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D20.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:高聚物;超声波学;密度;塑料;试验
【英文主题词】:amorphous;crystalline;density;molded;plaques;polyethylene;sonic;ultrasonic;ultrasound;
【摘要】:Thedensityofpolyethyleneisaconvenientlymeasurablepropertywhichisfrequentlyusefulasameansoffollowingphysicalchangesinasample,asanindicationofuniformityamongsamples,andasameansofidentification.Thistestmethodisdesignedtoyieldresultswithaprecisionofx00B1;0.08%orbetter.1.1Thistestmethodcoversthedeterminationofthedensityofpolyethylenethroughtheutilizationofultrasoundequipment.1.2Thistestmethodisbasedonthedistinctbehaviorsoftheamorphousandcrystallinephasesofpolyethyleneinresponsetoultrasound.Polyethylenecanbeviewedasacompositestructurewherehigh-densitycrystallineregionsareconnectedbylower-densityamorphousmaterial.Theratioofcrystallinetoamorphousmaterialdeterminesthefinaldensityofthematerial.Theamorphousandcrystallinephasesexhibitverydistinctbehaviorswithregardtothepropagationofsoundwaves.Thepropagationcharacteristicsinthecompositewilldependontherelativeamountofthetwophases(thedegreeofcrystallinity).1.3InorganicmaterialsincreasedensityasmeasuredbyTestMethodsD792andD1505,buttheyhavelittleornoeffectonultrasonicdensity.Theultrasonicmeasurementisbasicallyabaseresindensity.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThereisnosimilarorequivalentISOstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:4P.;A4
【正文语种】: