ISO 3761-1997 巴西玫瑰木油
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来源:标准资料网
【英文标准名称】:Oilofrosewood,Braziliantype[AnibarosaeodoraDuckevar.amazonicaDuckeorAnibaparviflora(Meissner)Mez]
【原文标准名称】:巴西玫瑰木油
【标准号】:ISO3761-1997
【标准状态】:作废
【国别】:国际
【发布日期】:1997-05
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC54
【标准类型】:()
【标准水平】:()
【中文主题词】:花梨木;香精油;规范;交货条件
【英文主题词】:specifications;deliveryconditions;rosewood;essentialoils
【摘要】:
【中国标准分类号】:Y41
【国际标准分类号】:71_100_60
【页数】:8P;A4
【正文语种】:英语
【英文标准名称】:Micrometers;standarddesignmicrometercallipersforexternalmeasurement;concepts,requirements,testing
【原文标准名称】:千分尺.外径千分尺.标准结构.概念.要求.检验
【标准号】:DIN863T.1-1983
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:
【英文标准名称】:StandardTestMethodsforLeaksUsingtheMassSpectrometerLeakDetectororResidualGasAnalyzerintheTracerProbeMode
【原文标准名称】:在示踪探针法中用质谱仪检漏器或残余气体分析器作泄漏检验的测试方法
【标准号】:ASTME498-1995(2006)
【标准状态】:现行
【国别】:
【发布日期】:1995
【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】:E07.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;检漏器;不渗透性;泄漏;无损检验;示踪法;质谱仪;残余气体
【英文主题词】:belljarleaktest;bombmassspectrometerleaktest;heliumleadtesting;heliumleaktest;leaktesting;massspectrometerleaktesting;sealedobjectmassspectrometerleaktest
【摘要】:TestMethodAisthemostfrequentlyusedinleaktestingcomponentswhicharestructurallycapableofbeingevacuatedtopressuresof0.1Pa(approximately10x2212;3torr).Testingofsmallcomponentscanbecorrelatedtocalibratedleaks,andtheactualleakratecanbemeasuredoracceptancecanbebasedonamaximumallowableleak.Formostproductionneedsacceptanceisbasedonacceptanceofpartsleakinglessthananestablishedstandardwhichwillensuresafeperformanceovertheprojectedlifeofthecomponent.Caremustbeexercisedtoensurethatlargesystemsarecalibratedwithreferenceleakatarepresentativeplaceonthetestvolume.Leakratesaredeterminedbycalculatingthenetgainorlossthroughaleakinthetestpartthatwouldcausefailureduringtheexpectedlifeofthedevice.TestMethodBisusedfortestingvacuumsystemseitherasastepinthefinaltestofanewsystemorasamaintenancepracticeonequipmentusedformanufacturing,environmentaltestorforconditioningparts.Asthevolumetendstobelarge,acheckoftheresponsetimeaswellassystemsensitivityshouldbemade.VolumeofthesysteminlitersdividedbythespeedofthevacuumpumpinL/swillgivetheresponsetimetoreach63%ofthetotalsignal.Responsetimesinexcessofafewsecondsmakesleakdetectiondifficult.TestMethodCistobeusedonlywhenthereisnoconvenientmethodofconnectingtheleakdetectortotheoutletofthehighvacuumpump.Ifaheliumleakdetectorisusedandthehighvacuumpumpisanionpumporcryopump,leaktestingisbestaccomplishedduringtheroughingcycleasthesepumpsleavearelativelyhighpercentageofheliuminthehighvacuumchamber.Thiswillobscureallbutlargeleaks,andthetracegaswillquicklysaturatethepumps.1.1Thesetestmethodscoverproceduresfortestingandlocatingthesourcesofgasleakingattherateof4.51014mol/s(1109Stdcm3/s)orgreater.Thetestmaybeconductedonanyobjecttobetestedthatcanbeevacuatedandtotheothersideofwhichheliumorothertracergasmaybeapplied.1.2Threetestmethodsaredescribed:1.2.1TestMethodA-Fortheobjectundertestcapableofbeingevacuated,buthavingnoinherentpumpingcapability.1.2.2TestMethodB-Fortheobjectundertestwithintegralpumpingcapability.1.2.3TestMethodC-FortheobjectundertestasinTestMethodB,inwhichthevacuumpumpsoftheobjectundertestreplacethosenormallyusedintheleakdetector.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Aspecifichazardstatementcanbefoundin.
【中国标准分类号】:H26
【国际标准分类号】:19_100
【页数】:4P.;A4
【正文语种】:
