ANSI H35.2-1990 铝轧制品的尺寸公差
作者:标准资料网 时间:2024-05-15 23:35:23 浏览:8967
来源:标准资料网
【英文标准名称】:Dimensionaltolerancesforaluminiummillproducts
【原文标准名称】:铝轧制品的尺寸公差
【标准号】:ANSIH35.2-1990
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【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】:Ambientairquality-Standardmethodformeasurementofbenzeneconcentrations-Pumpedsamplingfollowedbythermaldesorptionandgaschromatography
【原文标准名称】:环境空气质量.测量苯浓度的标准方法.热解吸和气相色谱法后的泵取样
【标准号】:BSEN14662-1-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2005-06-27
【实施或试行日期】:2005-06-27
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:工作材料;致癌物;危险的可裂变物质;环境空气;浓度(化学);基准方法;抽样方法;空气质量;大气污染;空气;保健;解吸;空气净化;分离;极限(数学);测量;苯含量;苯;加热;分析;定义;污染物;气相色谱法;泵;危险物质
【英文主题词】:
【摘要】:ThispartofEN14662givesgeneralguidanceforthesamplingandanalysisofbenzeneinairbypumpedsampling,thermaldesorptionandcapillarygaschromatography.ThispartofEN14662isinaccordancewiththegenericmethodologyselectedasthebasisoftheEuropeanUnionreferencemethodforthedeterminationofbenzeneinambientair[1]forthepurposeofcomparisonofmeasurementresultswithlimitvalueswithaone-yearreferenceperiod.ThispartofEN14662isvalidforthemeasurementofbenzeneinaconcentrationrangeofapproximately0,5μg/mto50μg/minanairsampletypicallycollectedoveraperiodof24hours.Theupperlimitoftheusefulrangeissetbythesorptivecapacityofthesorbentandbythelineardynamicrangeofthegaschromatographcolumnanddetectororbythesamplesplittingcapacityoftheanalyticalinstrumentationused.Thelowerlimitoftheusefulrangedependsonthenoiselevelofthedetectorandonblanklevelsofbenzeneand/orinterferingartefactsonthesorbent.Artefactsaretypicallysubngforsorbents,buthigherlevelsofaromatichydrocarbonshavebeennotedinothersorbents.Thedetectionlimitwillbeapproximately1/10ofthelowerconcentrationrange.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_20
【页数】:38P;A4
【正文语种】:英语
Product Code:SAE AMS2667
Title:Brazing, Silver, For Small Pressurized Fittings
Issuing Committee:Ams B Finishes Processes And Fluids Committee
Scope:This specification covers the engineering requirements for producing brazed joints in parts fabricated from austenitic corrosion and heat resistant steels, but may also be used on carbon or low-alloy steels or copper alloys, and the properties of such joints.
