GB/T 152.3-1988 紧固件 圆柱头用沉孔

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基本信息
标准名称:紧固件 圆柱头用沉孔
英文名称:Fasteners-Counterbores for hexagon socket head serewsand slotted cheese head screws
中标分类: 机械 >> 通用零部件 >> 紧固件
ICS分类: 机械系统和通用件 >> 紧固件
替代情况:GB 152-1976
发布部门: 中国机械工业联合会
发布日期:1988-02-06
实施日期:1989-01-01
首发日期:1959-06-03
作废日期:1900-01-01
主管部门:中国机械工业联合会
归口单位:全国紧固件标准化技术委员会
起草单位:机械委标准化研究所
出版日期:1900-01-01
页数:2页
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所属分类: 机械 通用零部件 紧固件 机械系统和通用件 紧固件
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【英文标准名称】:StandardTestMethodforSimultaneousEnumerationofTotalandRespiringBacteriainAquaticSystemsbyMicroscopy
【原文标准名称】:用显微镜进行水生系统中细菌总量和(呼吸时)呼出的细菌的同步计数试验方法
【标准号】:ASTMD4454-1985(2002)
【标准状态】:现行
【国别】:
【发布日期】:1985
【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】:D19.24
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:计数;细菌纲;试验;计算系统;水
【英文主题词】:aquaticsystems;bacteria;respiring
【摘要】:Measurementofbacterialdensitiesisgenerallythefirststepinestablishingarelationshipbetweenbacteriaandotherbiochemicalprocesses.5Itisknownthattheclassicalplatecountprocedureunderestimatesbacterialdensitieswhiletheepifluorescencedirectmicroscopicproceduremoreaccuratelydepictsthetotalnumbersofnonviableordormantandviablecellsinawatersample.Theacridine-orangeINT-formazanreductiontechniqueprovidesinformationonthetotalconcentrationsofbacteriaaswellasthatproportionwhichareactivelyrespiringandthusinvolvedindegradativeprocesses.Theacridine-orangeINT-formazanreductiontechniqueisbothquantitativeandprecise.Thisprocedureisidealforenumeratingbothpelagicandepibenthicbacteriainallfreshwaterandmarineenvironments.Theprocesscanbeemployedinsurveystudiestocharacterizethebacteriologicaldensitiesandactivitiesofenvironmentalwaters.1.1Thistestmethodcoversthedetectionandenumerationofaquaticbacteriabytheuseofanacridine-orangeepifluorescencedirect-microscopiccountingprocedure.Thistestmethodisapplicabletoenvironmentalwatersandpotablewaters.1.2Certaintypesofdebrisandothermicroorganismsmayfluoresceinacridine-orangestainedsmears.1.3Theproceduredescribedrequiresatrainedmicrobiologistortechnicianwhoiscapableofdistinguishingbacteriafromotherfluorescingbodiesonthebasisofmorphologywhenviewedathighermagnifications.1.4Useofbrightlightpermitsdifferentiationofsinglebacteriawherereducedformazanisdepositedatthepolarends.1.5Approximately104cells/mLarerequiredfordetectionbythistestmethod.1.6Minimalcellsizewhichallowsthedetectionofformazandepositsisrepresentedbybacteriaof0.4m.21.7Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:07_100_20(MICROBIOLOGYOFWATER)
【页数】:3P.;A4
【正文语种】:


【英文标准名称】:Hardwareforfurniture-Strengthanddurabilityofextensionelementsandtheircomponents
【原文标准名称】:家具五金件.加长组件及其构件的强度和耐久力
【标准号】:BSEN15338-2007+A1-2010
【标准状态】:现行
【国别】:英国
【发布日期】:2008-06-30
【实施或试行日期】:2008-06-30
【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】:抗断裂强度;电容性负载;连续性试验;定义;导轨;抽屉;耐久性;架设(施工作业);评估;适用性;家具;家具附件;导向机构;五金件;办公家具;检验荷载;性能;规范(验收);材料强度;试验;试验条件;磨损;木材;木材技术
【英文主题词】:Breakingstrength;Capacitiveloads;Continuitytests;Definitions;Drawerslides;Drawers;Durability;Erecting(constructionoperation);Evaluations;Fitnessforpurpose;Furniture;Furnitureaccessories;Guidemechanisms;Hardware;Officefurniture;Proofloading;Properties;Specification(approval);Strengthofmaterials;Testing;Testingconditions;Wear;Wood;Woodtechnology
【摘要】:ThisEuropeanStandardspecifiestestmethodsandrequirementsforthestrengthanddurabilityofalltypesofextensionelementsandtheircomponentsforallfieldsofapplication,excepttableextensions.Thetestsconsistoftheapplicationofloads,forcesandvelocitiessimulatingnormalfunctionaluse,aswellasmisuse,thatmightreasonablybeexpectedtooccur.Withtheexceptionofthecorrosiontestin6.4,thetestsaredesignedtoevaluatepropertieswithoutregardtomaterials,design/constructionormanufacturingprocesses.Thestrengthanddurabilitytestsonlyrelatetotheextensionelementsandthepartsusedfortheattachment,e.g.screws.Thestrengthanddurabilitytestsarecarriedoutinatestframewithspecifiedproperties.Thetestresultscanonlybeusedasaguidetotheperformanceofapieceoffurniture.Thetestresultsareonlyvalidfortheextensionelementtested.Theseresultsmaybeusedtorepresenttheperformanceofproductionmodelsprovidedthatthetestedmodelisrepresentativeoftheproductionmodel.Ageingandinfluencesofheatandhumidityarenotincluded.
【中国标准分类号】:Y82
【国际标准分类号】:97_140
【页数】:28P.;A4
【正文语种】:英语