【英文标准名称】:Magnetictapesoundrecordingandreproducingsystems-Specificationforelectricalmagnetictapeproperties
【原文标准名称】:磁带录音和放音系统.磁带特性规范
【标准号】:BSEN60094-5-1989
【标准状态】:现行
【国别】:英国
【发布日期】:1989-07-31
【实施或试行日期】:1989-07-31
【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】:声学;录音磁带;可比性;定义(术语);测定;电气工程;电性质和电现象;电磁的;影片;家庭插音室;家庭制作;检验;仪器;磁记录;磁录音;磁带记录;磁带;测量;测量仪器;测量技术;特性;记录工程;记录设备;记录系统;有声电影技术;录音;放声;规范(验收);摄影演播场地管理;系统;窄条带材;磁带录音机;术语;试验设备;试验
【英文主题词】:Acoustics;Audiotapes;Comparability;Definitions;Determination;Electricalengineering;Electricalpropertiesandphenomena;Electromagnetic;Films;Homestudios;Home-work;Inspection;Instruments;Magneticrecording;Magneticsoundrecording;Magnetictaperecordings;Magnetictapes;Measurement;Measuringinstruments;Measuringtechniques;Properties;Recordingengineering;Recordingequipment;Recordingsystems;Soundfilmtechniques;Soundrecording;Soundreproduction;Specification(approval);Studiomanagement;Systems;Tape;Taperecorders;Terms;Testequipment;Testing
【摘要】:Characteristics,methodsofmeasurementandequipmentrequiredtodeterminetheelectricalpropertiesfornon-perforatedmagnetictapeusedforprofessionalanddomesticanaloguesoundrecordingandreproduction.
【中国标准分类号】:M71
【国际标准分类号】:33_160_30
【页数】:40P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforVaporPressureofGasolineandGasoline-OxygenateBlends(DryMethod)
【原文标准名称】:汽油和汽油元氧混合物蒸气压力的标准试验方法(干燥法)
【标准号】:ASTMD4953-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D02.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:汽油;试验;蒸气压力
【英文主题词】:
【摘要】:Vaporpressureisanimportantphysicalpropertyofliquidspark-ignitionenginefuels.Itprovidesanindicationofhowafuelwillperformunderdifferentoperatingconditions.Forexample,vaporpressureisafactorindeterminingwhetherafuelwillcausevaporlockathighambienttemperatureorathighaltitude,orwillprovideeasystartingatlowambienttemperature.Petroleumproductspecificationsgenerallyincludevaporpressurelimitstoensureproductsofsuitablevolatilityperformance.Note38212;Vaporpressureoffuelsisregulatedbyvariousgovernmentagencies.1.1Thistestmethodcoversandisapplicabletogasolinesandgasoline-oxygenateblendswithavaporpressurerangefrom35to100kPa(5to15psi)(seeNote2).Thistestmethod,amodificationofTestMethodD323(ReidMethod),providestwoprocedurestodeterminethevaporpressure(Note1)ofgasolineandgasoline-oxygenateblends.Note0Becausetheexternalatmosphericpressureiscounteractedbytheatmosphericpressureinitiallypresentintheairchamber,thisvaporpressureisanabsolutepressureat37.8176;C(100176;F)inkilopascals(pounds-forcepersquareinch).Thisvaporpressurediffersfromthetruevaporpressureofthesampleduetosomesmallvaporizationofthesampleandairintheconfinedspace.Note0Vaporpressureofgasolineorgasoline-oxygenateblendsbelow35kPa(5psi)orgreaterthan100kPa(15psi)canbedeterminedwiththistestmethodbuttheprecisionandbias(Section)donotapply.Formaterialswithavaporpressuregreaterthan100kPa(15psi),usea0to200kPa(0to30psi)gaugeasspecifiedintheannexofTestMethodD323.1.2Somegasoline-oxygenateblendsmayshowahazewhencooledto0to1176;C.Ifahazeisobservedin9.4,itshallbeindicatedinthereportingofresults.Theprecisionandbiasstatementsforhazysampleshavenotbeendetermined(seeNote7).1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Specificwarningsaregivenin7.5,8.4.1,8.5.1,9.1,A1.1,andA1.1.3.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:8P.;A4
【正文语种】: