ISO 7779 AMD 1-2003 声学.信息技术设备和电信设备发出的空气噪声的测量.修改件1:CD/CVD-ROM驱动器的噪声测量规范

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【英文标准名称】:Acoustics-Measurementofairbornenoiseemittedbyinformationtechnologyandtelecommunicationsequipment;Amendment1:NoisemeasurementspecificationforCD/CVD-ROMdrives
【原文标准名称】:声学.信息技术设备和电信设备发出的空气噪声的测量.修改件1:CD/CVD-ROM驱动器的噪声测量规范
【标准号】:ISO7779AMD1-2003
【标准状态】:作废
【国别】:国际
【发布日期】:2003-03
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC43
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;光盘驱动器;电信;计算机硬件;只读数据光盘;声学试验;DVD;试验;信息技术;声学;空气噪声;计算机;噪声(环境的);办公室设备;激光唱机;测定
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Airbornenoise;Airbornenoiseemitted;Airbornesound;Cables;Calibration;CD-player;CD-ROM;Clayfraction;Comparison;Computerhardware;Computers;Corrrections;Data;Dataprocessing;Dataprocessingequipment;Definitions;Determination;Diskdrives;DVD;Envelopingsurfacemethods;Environment;Externalnoise;Filters;Freefields;Frequencies;Handling;Informationtechnology;Inputvoltage;Installations;Instruments;Layout;Loudnesslevels;Machinenoise;Machines;Measurement;Measurementduration;Measuringbanks;Measuringenvironment;Measuringincertainity;Measuringinstruments;Measuringrooms;Measuringsurfaces;Measuringsystems;Methods;Microphones;Moisture;Noise;Noisecontrol;Noiseemissions;Noise(environmental);Noisemeasurements;Officeequipment;Officemachines;Operatingconditions;Operatingstations;Operation;Operators;PC;Personalcomputers;Precision;Pressure;Printers;Reflection;Reverberationroommethod;Reverberationrooms;Rotation;Sitting;Soundintensity;Soundlevel;Soundpressure;Soundpressurelevel;Soundsources;Tables;Telecommunications;Temperature;Terminals;Testing;Typeofunit;Workingplaces
【摘要】:ThisisAmendment1toISO7779-1999(Acoustics—MeasurementofairbornenoiseemittedbyinformationtechnologyandtelecommunicationsequipmentAMENDMENT1:NoisemeasurementspecificationforCD/DVD-ROMdrives)
【中国标准分类号】:Z32
【国际标准分类号】:17_140_20;35_020
【页数】:4P.;A4
【正文语种】:英语


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【英文标准名称】:StandardTestMethodforDeterminingTransmissivityofNonleakyConfinedAquifersbytheTheisRecoveryMethod
【原文标准名称】:用泰斯复原法测定非漏泄承压含水层透射率的标准试验方法
【标准号】:ASTMD5269-1996(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【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】:D18.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aquifers;aquifertests;confinedaquifers;controlwells;groundwater;hydraulicproperties;observationwells;steptests;transmissivity;unconfinedaquifers;Aquifers;Confinedaquifers;Controlwells;Draw-downtest;Fieldtesting--groundwater/aqu
【摘要】:Assumptions:Thewelldischargesataconstantrate,Q,oratstepsofconstantrateQ1,Q2...Qn.Wellisofinfinitesimaldiameterandisopenthroughthefullthicknessoftheaquifer.Thenonleakyaquiferishomogeneous,isotropic,andareallyextensive.Dischargefromthewellisderivedexclusivelyfromstorageintheaquifer.ThegeometryoftheassumedaquiferandwellareshowninFig.1.ImplicationsofAssumptions:Implicitintheassumptionsaretheconditionsofradialflow.Verticalflowcomponentsareinducedbyacontrolwellthatpartiallypenetratestheaquifer,thatis,notopentotheaquiferthroughthefullthicknessoftheaquifer.Ifverticalflowcomponentsaresignificant,thenearestpartiallypenetratingobservationwellshouldbelocatedatadistance,r,beyondwhichverticalflowcomponentsarenegligible.See5.2.1ofTestMethodD4106forassistanceindeterminingtheminimumdistancetopartiallypenetratingobservationwellsandpiezometers.TheTheismethodassumesthecontrolwellisofinfinitesimaldiameter.Thestorageinthecontrolwellmayadverselyaffectdrawdownmeasurementsobtainedintheearlypartofthetest.See5.2.2ofTestMethodD4106forassistanceindeterminingthedurationoftheeffectsofwell-borestorageondrawdown.ApplicationofTheisRecoveryMethodforUnconfinedAquifers:Althoughtheassumptionsareapplicabletoartesianorconfinedconditions,theTheissolutionmaybeappliedtounconfinedaquifersif(A)drawdownissmallcomparedwiththesaturatedthicknessoftheaquiferorifthedrawdowniscorrectedforreductioninthicknessoftheaquiferand(B)theeffectsofdelayedgravityyieldaresmall.See5.2.3ofTestMethodD4106forguidanceintreatingreductioninsaturatedthicknessanddelayedgravitydrainageinunconfinedaquifers.FIG.1CrossSectionThroughaDischargingWellinaNonleakyAquifer1.1Thistestmethodcoversananalyticalprocedurefordeterminingthetransmissivityofaconfinedaquifer.Thistestmethodisusedtoanalyzedatafromtherecoveryofwaterlevelsfollowingpumpingorinjectionofwatertoorfromacontrolwellataconstantrate.1.2TheanalyticalproceduregiveninthistestmethodisusedinconjunctionwiththefieldprocedureinTestMethodD4050.1.3Limitations8212;ThevaliduseoftheTheisrecoverymethodislimitedtodeterminationoftransmissivitiesforaquifersinhydrogeologicsettingswithreasonablecorrespondencetotheassumptionsoftheTheistheory(see5.1).1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P13
【国际标准分类号】:93_160
【页数】:5P.;A4
【正文语种】:英语


Product Code:SAE MAM5706
Title:Nickel Alloy, Corrosion and Heat Resistant, Bars, Forgings, and Rings 57Ni 19.5Cr 13.5Co 4.3Mo 3.0Ti 1.4Al 0.006B 0.05Zr, Consumable Electrode or Vacuum Induction Melted, 995 to 1040掳C Solution Heat Treated
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a corrosion and heat resistant nickel alloy in the form of bars, forgings, flash welded rings, and stock for forging, flash welded rings, or heading procured in SI (metric) units.