HB 5-26-1983 松紧螺套
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来源:标准资料网
基本信息
标准名称: | 松紧螺套 |
替代情况: | 替代HB 5-21-1976 HB 5-22-1976 HB 5-23-1976 HB 5-24-1976 HB 5-25-1976 HB 5-26-1976 |
发布日期: | 1900-01-01 |
实施日期: | 1900-01-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
出版日期: | 1900-01-01 |
适用范围
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前言
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引用标准
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所属分类: 航空 航天 航空器及其附件 操纵系统及其附件
【英文标准名称】:StandardTestMethodforDeterminingSolarorPhotopicReflectance,Transmittance,andAbsorptanceofMaterialsUsingaLargeDiameterIntegratingSphere
【原文标准名称】:用大直经积分球测定材料的太阳能或光反射性,透明性和吸收性的标准试验方法
【标准号】:ASTME1175-1987(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1987
【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】:E44.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:absorptance;integratingsphere;opticalproperties;photopicproperties;reflectance;solarabsorptance;solarreflectance;solartransmittance;transmittance;Absorption--solarmaterials;Aerospaceapplications;Artificiallight;Corrugatedfibe
【摘要】:Toovercometheinadequaciesofconventionalspectrophotometricmeasurementtechniqueswhennonhomogeneousmaterialsaremeasured,alargeintegratingspheremaybeused.,Sincethebeamemployedinsuchspheresislargeincomparisontothedisparatiesofthematerialsbeingtested,thenonisotropicnatureofthespecimenbeingmeasuredisessentiallyaveraged,orintegratedoutofthemeasurement,inasingleexperimentaldetermination.Solarandphotopicopticalpropertiesmaybemeasuredeitherwithmonofunctionalspheresindividuallytailoredforthemeasurementofeithertransmittanceorreflectance,ormaybemeasuredwithasinglemultifunctionalspherethatisemployedtomeasurebothtransmittanceandreflectance.Amultifunctionalsphereisusedformakingtotalsolartransmittancemeasurementsinbothadirectional-hemisphericalandadirectional-directionalmode.Thesolarabsorptancecanbeevaluatedinasinglemeasurementasoneminusthesumofthedirectionalhemisphericalreflectanceandtransmittance.Whenasampleatthecenterofthesphereissupportedbyitsrim,thesumofthereflectanceandtransmittancecanbemeasuredasafunctionoftheangleofincidence.Thesolarabsorptanceisthenoneminusthemeasuredabsorptanceplustransmittance.1.1Thistestmethodcoversthemeasurementoftheabsolutetotalsolarorphotopicreflectance,transmittance,orabsorptanceofmaterialsandsurfaces.Althoughthereareseveralapplicabletestmethodsemployedfordeterminingtheopticalpropertiesofmaterials,theyaregenerallyusefulonlyforflat,homogeneous,isotropicspecimens.Materialsthatarepatterned,textured,corrugated,orareofunusualsizecannotbemeasuredaccuratelyusingconventionalspectrophotometrictechniques,orrequirenumerousmeasurementstoobtainarelevantopticalvalue.Thepurposeofthistestmethodistoprovideameansformakingaccurateopticalpropertymeasurementsofspatiallynonuniformmaterials.1.2Thistestmethodisapplicabletolargespecimensofmaterialshavingbothspecularanddiffuseopticalproperties.Itisparticularlysuitedtothemeasurementofthereflectanceofopaquematerialsandthereflectanceandtransmittanceofsemitransparentmaterialsincludingcorrugatedfiber-reinforcedplastic,compositetransparentandtranslucentsamples,heavilytexturedsurfaces,andnonhomogeneousmaterialssuchaswovenwood,windowblinds,draperies,etc.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(Forspecificsafetyhazards,seeNote1.)
【中国标准分类号】:F12
【国际标准分类号】:17_180_20
【页数】:4P.;A4
【正文语种】:英语
基本信息
标准名称: | 平地机术语 |
英文名称: | Graders--Terminology |
中标分类: |
工程建设 >>
施工机械设备 >>
施工机械设备综合 |
ICS分类: |
建筑材料和建筑物 >>
施工设备
|
替代情况: | 被GB/T 7920.9-2003代替 |
发布日期: | 1987-06-12 |
实施日期: | 1987-12-01 |
首发日期: | 1900-01-01 |
作废日期: | 2004-06-01 |
出版日期: | 1900-01-01 |
页数: | 5页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
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所属分类: 工程建设 施工机械设备 施工机械设备综合 建筑材料和建筑物 施工设备