NY/T 614-2002 小麦纹枯病测报调查规范
作者:标准资料网 时间:2024-05-16 05:51:09 浏览:8984
来源:标准资料网
基本信息
| 标准名称： | 小麦纹枯病测报调查规范 |
| 英文名称： | Rules for the investigation and forecast of wheat sharp eyespot ( |
| 中标分类： |
农业、林业 >>
植物保护 >>
植物检疫、病虫害防治 |
| ICS分类： |
农业 >>
农业和林业
|
| 发布部门： | 中华人民共和国农业部 |
| 发布日期： | 2002-12-30 |
| 实施日期： | 2003-03-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 2004-04-17 |
| 页数： | 平装16开， 页数：9， 字数：14千字 |
| 书号： | 155066.2-15029 |
适用范围
本标准规定了小麦纹枯病发病程度记载项目和分级指标，病情系统调查和普查方法，测报资料收集、汇报和汇总方法。本标准适用于实施小麦纹枯病的测报调查。
前言
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目录
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引用标准
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所属分类： 农业 林业 植物保护 植物检疫 病虫害防治 农业 农业和林业
【英文标准名称】:Radio-frequencyconnectors-SectionalspecificationforCQMseriesquicklockRFconnectors
【原文标准名称】:射频连接器.CQM系列快速锁紧射频(RF)连接器用分规范
【标准号】:BSDDIEC/PAS61169-39-2008
【标准状态】:作废
【国别】:英国
【发布日期】:2008-07-02
【实施或试行日期】:2008-07-02
【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】:电缆;特性;同轴连接器;连接器的连接件;尺寸选定;尺寸;功能系列;电插头;电气工程;高频工程;阻抗;接口;质量评定;速卸机构;射频电缆;射频连接器;射频插头;射频测量;分规范;测试
【英文主题词】:Cables;Characteristics;Coaxialconnectors;Connectoredjoints;Dimensioning;Dimensions;Dutyseries;Electricplugs;Electricalengineering;High-frequencyengineering;Impedance;Interfaces;Qualityassessment;Quick-releasemechanisms;Radiofrequencycables;Radiofrequencyconnectors;Radio-frequencyplugs;R.F.measurements;Sectionalspecification;Testing
【摘要】:
【中国标准分类号】:L23
【国际标准分类号】:33_120_30
【页数】:24P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforDeterminingtheCharpyImpactResistanceofNotchedSpecimensofPlastics
【原文标准名称】:测定塑料切口试样的抗夏氏冲击性能的标准试验方法
【标准号】:ASTMD6110-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D20.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Charpyimpact;impactresistance;notchsensitivity;notchedspecimen;Charpyimpacttest;Impacttesting--Charpy;Notchedplasticspecimens;Windageandfrictioncorrectionchart
【摘要】:Beforeproceedingwiththistestmethod,refertothematerialspecificationforthematerialbeingtested.Anytestspecimenpreparation,conditioning,dimensionsandtestingparametersrequiredbythematerialsspecificationshalltakeprecedenceoverthoserequiredbythistestmethod.Table1ofClassificationD4000liststheASTMmaterialsstandardsthatcurrentlyexist.Ifthereisnomaterialspecification,thentherequirementsofthistestmethodapply.Thependulumimpacttestindicatestheenergytobreakstandardtestspecimensofspecifiedsizeunderstipulatedconditionsofspecimenmounting,notching(stressconcentration),andpendulumvelocityatimpact.Forthistestmethod,theenergylostbythependulumduringthebreakageofthespecimenisthesumoftheenergiesrequiredtoinitiatefractureofthespecimen;topropagatethefractureacrossthespecimen;tothrowthefreeendsofthebrokenspecimen(tossenergy);tobendthespecimen;toproducevibrationinthependulumarm;toproducevibrationorhorizontalmovementofthemachineframeorbase;toovercomefrictioninthependulumbearingandintheindicatingmechanism,andtoovercomewindage(pendulumairdrag);toindentordeform,plastically,thespecimenatthelineofimpact;andtoovercomethefrictioncausedbytherubbingofthestrikingnoseoverthefaceofthebentspecimen.Note58212;Thetossenergy,ortheenergyusedtothrowthefreeendsofthebrokenspecimen,issuspectedtorepresentaverylargefractionofthetotalenergyabsorbedwhentestingrelativelydenseandbrittlematerials.NoprocedurehasbeenestablishedforestimatingthetossenergyfortheCharpymethod.Fortough,ductile,fiber-filled,orcloth-laminatedmaterials,thefracturepropagationenergyisusuallylargecomparedtothefractureinitiationenergy.Whentestingthesematerials,energylossesduetofracturepropagation,vibration,frictionbetweenthestrikingnoseandthespecimenhasthepotentialtobecomequitesignificant,evenwhenthespecimenisaccuratelymachinedandpositioned,andthemachineisingoodconditionwithadequatecapacity(seeNote6).Significantenergylossesduetobendingandindentationwhentestingsoftmaterialshavealsobeenobserved.Note68212;Althoughtheframeandthebaseofthemachinemustbesufficientlyrigidandmassivetohandletheenergiesoftoughspecimenswithoutmotionorexcessivevibration,thependulumarmcannotbemadeverymassivebecausethegreaterpartofitsmassmustbeconcentratednearitscenterofpercussionatitsstrikingnose.Locatingthestrikingnosepreciselyatthecenterofpercussionreducesthevibrationofthependulumarmwhenusedwithbrittlespecimens.Somelossesduetopendulumarmvibration(theamountvaryingwiththedesignofthependulum)willoccurwithtoughspecimensevenwhenthestrikingnoseisproperlypositioned.Inawell-designedmachineofsufficientrigidityandmass,thelossesduetovibrationandfrictioninthependulumbearingandintheindicatingmechanismwillbeverysmall.Vibrationallossesareobservedwhenwidespecimensoftoughmaterialsaretestedinmachinesofinsufficientmass,orinmachinesthatarenotsecurelyfastenedtoaheavybase.Sincethistestmethodpermitsavariationinthewidthofthespecimensandsincethewidthdictates,formanymaterials,whetherabrittle,low-energybreak(asevidencedbylittleornodrawingdownorneckingandbyarelativelylowenergyabsorption)oraductile,high-energybreak(asevidencedbyconsiderabledrawingorneckingdownintheregionbehindthenotchandbyarelativelyhighenergyabsorption)willoccur,itis........
【中国标准分类号】:G31
【国际标准分类号】:83_140_01
【页数】:17P.;A4
【正文语种】:英语
