SN/T 2721-2010 进出口矿产品中砷和汞的检测方法 原子荧光光度法
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来源:标准资料网
基本信息
标准名称: | 进出口矿产品中砷和汞的检测方法 原子荧光光度法 |
英文名称: | Determination of arsenic and mercury in export-import ores—Atomic fluorescence spectrometric method |
发布部门: | 国家质量监督检验检疫总局 |
发布日期: | 2010-11-01 |
实施日期: | 2011-05-01 |
首发日期: | |
作废日期: | |
起草单位: | 国家认证认可监督管理委员会 |
出版社: | 中国标准出版社 |
出版日期: | 2011-05-01 |
页数: | 8页 |
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所属分类: 农业 林业 水产 渔业 水产 渔业综合
Product Code:SAE J1615
Title:Thread Sealants
Issuing Committee:Air Brake Tubing And Tube Ftg Committee
Scope:Male pipe threads, including male dryseal pipe threads, when made into assemblies or installed into ports, will generally leak if not covered with a sealant.This SAE Recommended Practice is intended as a guide to assist designers and/or users in the selection and application of various types of thread sealants. The designers and users must make a systematic review of each type and application and then select the sealant to fulfill the requirements of the application. The following are general guidelines and are not necessarily a complete list.【英文标准名称】:Rollingbearings-Staticloadratings
【原文标准名称】:滚动轴承.静载荷额定值
【标准号】:ISO76-2006
【标准状态】:现行
【国别】:国际
【发布日期】:2006-05
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC4
【标准类型】:()
【标准水平】:()
【中文主题词】:轴向;轴向止推轴承;滚珠轴承;轴承;定义;直径;荷载能力;额定负荷;负荷;数学计算;计算方法;径向;径向轴承;额定值;滚子轴承;滚柱;滚动轴承;静态的;静荷载;静力学
【英文主题词】:Axial;Axial-thrustbearings;Ballbearings;Bearings;Definition;Definitions;Diameter;Factorofsafety;Loadcapacity;Loadratings;Loading;Mathematicalcalculations;Methodsofcalculation;Radial;Radialbearings;Ratings;Rollerbearings;Rollers;Rollingbearings;Static;Staticloading;Statics
【摘要】:ThisInternationalStandardspecifiesmethodsofcalculatingthebasicstaticloadratingandthestaticequivalentloadforrollingbearingswithinthesizerangesshownintherelevantISOstandards,manufacturedfromcontemporary,commonlyused,highquality,hardenedbearingsteelinaccordancewithgoodmanufacturingpracticeandbasicallyofconventionaldesignasregardstheshapeoftherollingcontactsurfaces.CalculationscarriedoutinaccordancewiththisInternationalStandarddonotyieldsatisfactoryresultsforbearingsinwhich,becauseofapplicationconditionsand/orinternaldesign,thereisaconsiderabletruncationoftheareaofcontactbetweentherollingelementsandtheringraceways.Thesamelimitationapplieswhereapplicationconditionscausedeviationsfromanormalloaddistributioninthebearing,forexamplemisalignment,preloadorextralargeclearanceorwherespecialsurfacetreatmentorcoatingsareused.Wherethereisreasontoassumethatsuchconditionsprevail,theusershouldconsultthebearingmanufacturerforrecommendationsandtheevaluationofthestaticequivalentload.ThisInternationalStandardisnotapplicabletodesignswheretherollingelementsoperatedirectlyonashaftorhousingsurface,unlessthatsurfaceisequivalentinallrespectstothebearingsurfaceitreplaces.Double-rowradialbearingsanddouble-directionthrustbearingsare,whenreferredtointhisInternationalStandard,presumedtobesymmetrical.Inaddition,guidelinesaregivenforstaticsafetyfactorstobeappliedinheavyloadedapplications.
【中国标准分类号】:J11
【国际标准分类号】:21_100_20
【页数】:14P;A4
【正文语种】:英语