【英文标准名称】:Householdandsimilarelectricalappliances-Testcodeforthedeterminationofairborneacousticalnoise-Part2-14:Particularrequirementsforrefrigerators,frozen-foodstoragecabinetsandfoodfrozeers
【原文标准名称】:家用和类似用途电器.气载噪声的测定用试验规则.第2-14部分:制冷机、冷冻食品储藏柜和食品冻柜的专用要求
【标准号】:IEC60704-2-14-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-12
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC59
【标准类型】:()
【标准水平】:()
【中文主题词】:声学测量;声学试验;声试验;声学;发出的空气噪声;冷却设备;冷藏柜;家用设备;家用;测量;空气噪声测量;噪声(环境的);噪声测量;制冷机;声级;测试
【英文主题词】:
【摘要】:ThispartofIEC60704specifiesmethodsformeasuringairborneacousticalnoiseemittedbyelectricrefrigerators,frozen-foodstoragecabinets,foodfreezersandtheircombinationsforhouseholdandsimilaruses,suppliedfromthemainsorfrombatteries.Theterm"similaruse"means"useunderconditionssimilartothoseinahousehold",forexample,incafés,restaurants,hotels,andsimilarestablishments.Thisstandarddoesnotapplytoappliances,equipmentormachinesdesignedexclusivelyforindustrialorcommercialpurposes.Thisstandardisconcernedwithobjectivemethodsofengineeringaccuracy(engineeringmethod,grade2,accordingtoIS02204)fordeterminingsoundpowerlevels,(LWexpressedindecibelswithreferencetoasoundpowerof1pW,ofairborneacousticalnoisewithinthespecifiedfrequencyrangeofinterest,andforspecifiedoperatingconditionsoftheappliancetobemeasured.Thefrequencyrangeofinterestincludestheoctavebandswithcentrefrequenciesbetween125Hzand8000Hz(thisintervalbeing,forpracticalreasons,narrowerthanthefrequencyrangeofaudiblesound).Thefollowingsoundpowerlevelsareused:–A-weightedsoundpowerlevel,LWA;–octavebandsoundpowerlevels,LWOct.Ingeneral,themethodsdescribedarespecifiedforappliancesoperatedwithnooperatorpresent.Thenoisemeasurementsaremadewhilethecompressorsarerunning.Requirementsastoanindicationofthenoiseemissionvaluesarenotthesubjectofthisstandard.Thisstandarddoesnotincludemethodsfordeterminingsoundpowerlevelswithprecisionaccuracy(precisionmethod,grade1,accordingtoIS02204)specified,forexample,inIS03741,IS03742andIS03745;theymay,however,beappliediftheappropriateinstrumentationandtestenvironmentsareavailable.
【中国标准分类号】:Y61
【国际标准分类号】:17_140_20;97_040_30
【页数】:26P;A4
【正文语种】:英语


【英文标准名称】:Technicaldrawings-Generalprinciplesofpresentation-Part40:Basicconventionsforcutsandsections(ISO128-40:2001)
【原文标准名称】:技术制图.图象表示的一般原则.第40部分:切面图和剖面图的基本惯例(ISO128-40:2001)
【标准号】:DINISO128-40-2002
【标准状态】:现行
【国别】:德国
【发布日期】:2002-05
【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】:文献;工程图;图纸;直线的类型;直线-厚度;符号表示;截面;基础;投影(制图);造船;名称与符号;尺寸;切割面;正交的;剖面图;画法;表示法;产品文件;应用;投影法;基本法规;图形表示;直线;定义;应用规则;船体;视图
【英文主题词】:
【摘要】:Thedocumentcontainsthegeneralprinciplesofpresentingcutsandsectionstobeappliedtotechnicaldrawingsfollowingtheorthographicprojectionmethod.
【中国标准分类号】:J04
【国际标准分类号】:01_100_01
【页数】:11P;A4
【正文语种】:德语