ISO 9245-1991 土方机械机器生产率词汇、符号和单位两种语言版
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【英文标准名称】:Earth-movingmachinery;machineproductivity;vocabulary,symbolsandunits
【原文标准名称】:土方机械机器生产率词汇、符号和单位两种语言版
【标准号】:ISO9245-1991
【标准状态】:现行
【国别】:国际
【发布日期】:1991-12
【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/TC127
【标准类型】:()
【标准水平】:()
【中文主题词】:土方机械;测量单位;符号;词汇;生产能力
【英文主题词】:Buildingmachines;Definitions;Determination;Earth-movingequipment;Mathematicalcalculations;Measurement;Mechanicalengineering;Outputdetermination;Performance;Powermeasurement;Productivity;Symbols;Unitsofmeasurement;Vocabulary
【摘要】:Specifies6termsanddefinitionsinEnglishandFrench.AnnexAisforinformationonly.
【中国标准分类号】:P97
【国际标准分类号】:53_100
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:Acoustics-Measurementofinsertionlossofductedsilencerswithoutflow-Laboratorysurveymethod
【原文标准名称】:声学.无气流管道消声器插入损失的测量.实验室测量法
【标准号】:BSENISO11691-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2010-05-31
【实施或试行日期】:2010-05-31
【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】:
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Airducts;Cables;Calibration;Canals;Checkingequipment;Classes;Definitions;Ducts;Enginesilencers;Flow;Insertionloss;Laboratorytesting;Laboratorytests;Loudspeakers;Measurement;Measurementcircuits;Measuringenvironment;Measuringequipment;Measuringtechniques;Microphones;Mineralwool;Noiseabatement;Precision;Reverberationrooms;Safetyofmachinery;Sonictesting;Sound;Soundmeters;Soundsources;Testresults;Testing;Testingdevices
【摘要】:ThisInternationalStandardspecifiesalaboratorysubstitutionmethodtodeterminetheinsertionlosswithoutflowofducted,mainlyabsorbent,circularandrectangularsilencers,aswellasotherductelementsforuseinventilatingandair-conditioningsystems.ThisInternationalStandardisapplicabletosilencerswherethedesignvelocitydoesnotexceed15m/s.Asthemethoddoesnotincludeselfgeneratedflownoise,thisInternationalStandardisnotsuitablefortestsonsilencerswherethistypeofnoiseisofgreatimportancefortheevaluationofthesilencerperformance.TheinsertionlossdeterminedaccordingtothisInternationalStandardinalaboratorywillnotnecessarilybethesameastheinsertionlossthatwillbeobtainedinaninstallationinthefield.Differentsoundandflowfieldsintheductwillyielddifferentresults.AsthisInternationalStandardrequiresregulartestducts,theresultsmayincludesomeflankingtransmissonviastructuralvibrationintheductwalls,thatsetsanupperlimittotheinsertionlossthatcanbedetermined.ThisInternationalStandardisintendedtobeusedforcircularsilencerswithdiametersof80mmto2000mmorrectangularsilencerswithcross-sectionalareaswithinthesamerange.
【中国标准分类号】:P31
【国际标准分类号】:17_140_20;91_120_20;91_140_30
【页数】:14P.;A4
【正文语种】:英语
Product Code:SAE J1833
Title:Hot Impulse Test for Hydraulic Brake Hose Assemblies
Issuing Committee:Automotive Brake And Steering Hose Standards Comm
Scope: This SAE Recommended Practice presents an accelerated test to verify the structural integrity of hydraulic brake hose and the hose-to-fitting seal. It is intended to simulate the effects of environmental aging and braking pressurization on brake hose assemblies. The test is a guide to assist hose designers and/or users in determining brake hose assembly performance characteristics under conditions of heat and pressure.