ANSI S12.10-2002 声学.信息技术和电信设备发出的空气载噪声的测量

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【英文标准名称】:Acoustics-MeasurementofAirborneNoiseEmittedbyInformationTechnologyandTelecommunicationsEquipment
【原文标准名称】:声学.信息技术和电信设备发出的空气载噪声的测量
【标准号】:ANSIS12.10-2002
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:声学;空气噪声;计算机;定义;机械噪声;噪声辐射;噪声测量;办公室设备;办公机器;声级;声音传播
【英文主题词】:Acoustics;Airbornenoise;Computers;Definition;Definitions;Machinenoise;Noiseemissions;Noisemeasurements;Officeequipment;Officemachines;Soundlevel;Soundpropagation
【摘要】:Specifiesmethodsformeasurementofairbornenoiseemittedbyinformationtechnologyandtelecommunicationsequipment.Hitherto,widevarietyofmethodshavebeenappliedbymanufacturersanduserstosatisfyparticularequipment/applicationneeds.Thesepracticesmakecomparisonofnoiseemissiondifficult.Simplifiescomparisons&isthebasisfordeclarationofnoiseemissionlevelsofinfotechnologyandtelecommunicationsequipment.NationalAdoptionofISO7779:1999withamendmentFDAM1.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_20;35_180;35_260
【页数】:
【正文语种】:英语

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上一篇: ANSI/ASME N509-2002 核电厂空气净化设备和部件
下一篇: ANSI/ASA S12.50-2002 声学.噪声源声功率级的测定.基本标准的使用指南

MIL-PRF-28000B, PERFORMANCE SPECIFICATION DIGITAL REPRESENTATION FOR COMMUNICATION OF PRODUCT DATA: IGES APPLICATION SUBSETS AND IGES APPLICATION PROTOCOLS (30 SEP 1999)., This specification identifies the requirements to be met when product definition data is delivered in the digital format of the Initial Graphics Exchange Specification (IGES, in accordance with the American National Standard (ANS) / United States Product Data Association (US PRO) standard. Discrete subsets and application protocols of the IGES entities are identified by class according to the application for which the digital data was prepared.【英文标准名称】:Potassiumhydroxideforindustrialuse;Determinationofcarbondioxidecontent;Titrimetricmethod
【原文标准名称】:工业用氢氧化钾二氧化碳含量的测定滴定法
【标准号】:ISO2900-1973
【标准状态】:作废
【国别】:国际
【发布日期】:1973-08
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC47
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析和试验;含量测定;氢氧化钾;容量分析;化学分析;化学制品;二氧化碳
【英文主题词】:volumetricanalysis;chemicalanalysisandtesting;carbondioxide;chemicals;determinationofcontent;potassiumhydroxide
【摘要】:ApplicabletoproductshavingCO2contentsofmorethan0.01%(m/m).Threecasesareenvisaged.Theproductcontainingneithersulphidesnorchloratesorcontainingsulphidesorchlorates.Theprincipleinpresenceofneithersulphidesnorchloratesconsistsinliberationofcarbondioxideinaflowofgasandabsorptioninanexcessofstandardvolumetricbariumhydroxidesolution.Titrationoftheexcesswithstandardvolumetrichydrochloricacidsolutioninthepresenceofthymolphthaleinasindicator.Inpresenceofsulphides,pretreatmentbyoxidationofthesulphidesbyhydrogenperoxideandboiling,inpresenceofchlorates,pretreatmentbyreductionofthechloratestochloridesbytheadditionofiron(II)sulphate.
【中国标准分类号】:G10
【国际标准分类号】:71_060_40
【页数】:3P;A4
【正文语种】:英语