ISO 113-2-1979 滚动轴承附件.第2部分:止推轴承座
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【英文标准名称】:Rollingbearingaccessories;Part2:Plummerblockhousings
【原文标准名称】:滚动轴承附件.第2部分:止推轴承座
【标准号】:ISO113-2-1979
【标准状态】:作废
【国别】:国际
【发布日期】:1979-02
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC4
【标准类型】:()
【标准水平】:()
【中文主题词】:止推轴承;附件;轴承箱;尺寸;滚动轴承;直径
【英文主题词】:plummer-blockbearings;rollingbearings;bearinghousings;dimensions;accessories;diameters;diameter
【摘要】:
【中国标准分类号】:J11
【国际标准分类号】:3470
【页数】:2P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforSpecificGravityofSoilSolidsbyGasPycnometer
【原文标准名称】:用气体比重瓶法测定土壤固体粒子比重的标准试验方法
【标准号】:ASTMD5550-2006
【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】:D18.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:底部;土壤
【英文主题词】:desiccant;Drierite;salinity;soil;specificgravity;watercontent
【摘要】:Thespecificgravityvalueisusedinmanyphaserelationequationstodeterminerelativevolumesofparticle,water,andgasmixtures.Thetermsoilparticletypicallyreferstoanaturallyoccurringmineralgrainthatisnotreadilysolubleinwater.Therefore,thespecificgravityofsoilsthatcontainextraneousmatter(suchascement,lime,andthelike)orwater-solublematerial(suchassalt)mustbecorrectedfortheprecipitatethatformsonthespecimenafterdrying.Iftheprecipitatehasaspecificgravitylessthantheparentsoilgrains,theuncorrectedtestresultwillbetoolow.Iftheprecipitatehasahigherspecificgravity,thentheuncorrectedtestvaluewillbetoohigh.Note28212;Notwithstandingthestatementsonprecisionandbiascontainedinthistestmethod:Theprecisionofthistestmethodisdependentonthecompetenceofthepersonnelperformingitandthesuitabilityoftheequipmentandfacilitiesused.AgencieswhichmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetenttesting.UsersofthistestmethodarecautionedthatcompliancewithPracticeD3740doesnotensurereliabletesting.Reliabletestingdependsonseveralfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodcoversthedeterminationofthespecificgravityofsoilsolidsbymeansofagaspycnometer.Particlesizeislimitedbythedimensionsofthespecimencontaineroftheparticularpycnometerbeingused.1.2TestMethodD854maybeusedinsteadoforinconjunctionwiththistestmethodforperformingspecificgravitytestsonsoils.NotethatTestMethodD854doesnotrequirethespecializedtestapparatusneededbythistestmethod.However,TestMethodD854maynotbeusedifthespecimencontainsmatterthatcanreadilydissolveinwater,whereasthistestmethoddoesnothavethatlimitation.1.3AllmeasuredandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.3.1Forpurposesofcomparing,ameasuredorcalculatedvalue(s)withspecifieslimits,themeasuredorcalculatedvalue(s)shallberoundedtothenearestdecimalorsignificantdigitsinthespecifiedlimits.1.3.2Theproceduresusedtospecifyhowdataarecollected/recordedandcalculatedinthisstandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatshouldgenerallyberetained.Theproceduresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsiderationsfortheusersobjectives;anditiscommonpracticetoincreaseorreducesignificantdigitsofreporteddatatobecommensuratewiththeseconsiderations.Itisbeyondthescopeofthisstandardtoconsidersignificantdigitsusedinanalysismethodsforengineeringdesign.1.4ThevaluesstatedinacceptableSIunitsaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B11
【国际标准分类号】:13_080_10
【页数】:5P.;A4
【正文语种】:
基本信息
| 标准名称： | 白铜化学分析方法火焰原子吸收分光光度法测定铝量 |
| 中标分类： |
冶金 >>
金属化学分析方法 >>
重金属极其合金分析方法 |
| 替代情况： | 被GB/T 5121.13-1996代替 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1988-12-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 5页 |
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： 冶金 金属化学分析方法 重金属极其合金分析方法
