MIL-L-87177A
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MIL-L-87177A, MILITARY SPECIFICATION: MILITARY SPECIFICATION: LUBRICANTS, WATER DISPLACING, SYNTHETIC (08 FEB 1990)., This specification covers synthetic, water displacing lubricant, compoundswhich may be applied from gas pressurized containers, or by dipping or brushing.
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基本信息
| 标准名称： | 化学试剂 试验方法中所用制剂及制品的制备 |
| 英文名称： | Chemical reagent--Preparations of reagent solutions for use in test methods |
| 中标分类： | 化工 >> 化学试剂 >> 化学试剂综合 |
| ICS分类： | 化工技术 >> 分析化学 >> 化学试剂 |
| 替代情况： | GB 603-1977;被GB/T 603-2002代替 |
| 发布日期： | 1988-09-05 |
| 实施日期： | 1999-06-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 2003-04-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 14页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 化工 化学试剂 化学试剂综合 化工技术 分析化学 化学试剂
【英文标准名称】:Acoustics-Noiseemittedbymachineryandequipment-Determinationofemissionsoundpressurelevelsataworkstationandatotherspecifiedpositionsfromthesoundpowerlevel【原文标准名称】:声学.机械装置及设备发出的噪声.在工作地点和其它试验场所从声功率级测量声压级
【标准号】:BSENISO11203-1996
【标准状态】:作废
【国别】:英国
【发布日期】:1996-11-15
【实施或试行日期】:1996-11-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:测量特征;声强;声学;现场试验;声学测量;操作工位;噪声(环境的);准确度;试验设备;自然工作条件;等级(质量);数学计算;再现性;试验条件
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Airbornenoise;Bandoffrequencies;Definitions;Emission;Ergonomics;Frequencies;Instruments;Machinenoise;Machines;Mathematicalcalculations;Measuringincertainity;Methods;Noise;Noiseemissions;Noisemeasurements;Operatingstations;Position;Procedures;Radiation;Soundintensity;Soundlevel;Soundlevels;Soundpressure;Soundpressurelevel;Soundpropagation;Soundsources;Workingplaces
【摘要】:1GeneralThisInternationalStandardspecifiestwomethodsfordeterminingtheemissionsoundpressurelevelsofmachineryandequipment,ataworkstationandatotherspecifiedpositionsnearby,bycalculationfromthesoundpowerlevel.Theprincipalpurposeofthisdeterminationistopermitcomparisonoftheper-formanceofdifferentunitsofagivenfamilyofma-chineryorequipment,underdefinedenvironmentalconditionsandstandardizedmountingandoperatingconditions.ThedataobtainedmayalsobeusedforthedeclarationandverificationofemissionsoundpressurelevelsasspecifiedinISO4871.Emissionsoundpressurelevelsaredeterminedwiththesamefrequencyweightingandtimeweighting,orinthesamefrequencybands,asthoseforwhichsoundpowerlevelshavebeendetermined.NOTES1ThecontentsofthisandrelatedInternationalStandardsaresummarizedintable1ofISO11200:1995.2Atanygivenpositioninrelationtoaparticularmachine,andforgivenmountingandoperatingconditions,theemis-sionsoundpressurelevelsdeterminedbythemethodofthisInternationalStandardwillingeneralbelowerthanthedirectlymeasuredsoundpressurelevelsforthesamema-chineinthetypicalworkroomwhereitisused.Thisisduetoreverberationandthecontributionsofothermachines.AmethodofcalculatingthesoundpressurelevelsinthevicinityofamachineoperatingaloneinaworkroomisgiveninISO11690-3.Commonlyobserveddifferencesare1dBto5dB,butinextremecasesthedifferencemaybeevengreater.2TypesofnoiseandnoisesourcesThisInternationalStandardis,inprinciple,applicabletomovingorstationarymachines,forindoororout-dooruse,particularlythosemachineswhicharemass-produced.ThemethodsgiveninthisInter-nationalStandardarenotapplicabletohighlydirec-tionalsoundsourcesusedoutdoors.ThisInternationalStandardisparticularlyapplicabletomachineswhoselargestdimensionislessthanorequalto1m.Itisalsoapplicabletolargermachinesincertaincases(see6.2.3).ThisInternationalStandardisapplicabletoalltypesofnoiseasdefinedinISO2204andISO12001forwhichmethodsfordeterminingthesoundpowerlevelareavailable.3TestenvironmentThetestenvironmenttobeusedisthatwhichisspecifiedforthedeterminationofthesoundpowerlevelinaccordancewiththeInternationalStandardsoftheISO3740orISO9614series.4SpecifiedpositionsThisInternationalStandardisapplicabletoworkstationsandotherspecifiedpositionsinthevicinityofthesourceundertestwhereemissionsoundpressurelevelsaretobedetermined.Itisnotappli-cabletoworkstationsandotherdefinedpositionswhicharesituatedinsideacaboracabin,orbehindascreen.Aworkstationcanbeasinglepoint,correspondingtothespecifiedpositionofastandingorseatedop-erator.Itcanalsobeaspecifiedpath.NOTE3Moredetailedspecificationsregardingseated,standing,stationaryormovingoperators,aswellasinfor-mationconcerningbystanders,aretobefoundinISO11201.5SpecificfieldofapplicationofeachmethodSpecificinformationonthefieldofapplicationofeachofthetwomethodsdescribedinthisInternationalStandardisgivenin6.2.2and6.2.3.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_20
【页数】:16P.;A4
【正文语种】:英语
