BS EN 60122-3-2010 经质量评定的石英晶体件.标准外形和引线连接
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【英文标准名称】:Quartzcrystalunitsofassessedquality.Standardoutlinesandleadconnections
【原文标准名称】:经质量评定的石英晶体件.标准外形和引线连接
【标准号】:BSEN60122-3-2010
【标准状态】:现行
【国别】:英国
【发布日期】:2011-02-28
【实施或试行日期】:2011-02-28
【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】:
【英文主题词】:Connectionlinks;Connections;Crystals(electronic);Designations;Dimensions;Electricenclosures;Electricalengineering;Electronicengineering;Enclosures;Frequencycontrol;Frequencyselection;Frequencystabilization;Overalldimensions;Piezoelectricdevices;Pinconfiguration;Pins;Quality;Wireleads;Wireterminations;Wires
【摘要】:
【中国标准分类号】:
【国际标准分类号】:31_140
【页数】:28P;A4
【正文语种】:英语
基本信息
标准名称: | 水利系统无线电技术管理规范(附条文说明) |
英文名称: | Specification for radio technical regulation of water department |
中标分类: |
通信、广播 >>
通信网 >>
通信网技术体制 |
ICS分类: |
电信、音频和视频技术 >>
电信系统 >>
电信系统综合
|
发布部门: | 中华人民共和国水利部 |
发布日期: | 2004-10-13 |
实施日期: | 2005-02-01 |
首发日期: | |
作废日期: | |
主管部门: | 水利部 |
起草单位: | 水利部水利信息中心 |
起草人: | 李亚中、曾祥毅、王静、杭在全等 |
出版社: | 中国水利水电出版社 |
出版日期: | 2005-02-01 |
页数: | 37页 |
适用范围
本标准适用于水利系统无线电技术管理工作。
前言
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目录
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引用标准
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所属分类: 通信 广播 通信网 通信网技术体制 电信 音频和视频技术 电信系统 电信系统综合
【英文标准名称】:StandardGuideforConductingTerrestrialPlantToxicityTests
【原文标准名称】:陆上植物毒性试验的标准指南
【标准号】:ASTME1963-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E47.02
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:Brassica;Inhibitorypotential(toxicchemicals);Planttissueanalysis;Qualityassurance(QA)--environmental;Rootelongation;Seedlingemergence;Terrestrialplanttoxicity;Terrestrialsystems;Toxicity/toxicology;Woodyplants
【摘要】:Terrestrialphytotoxicitytestsareusefulinassessingtheeffectsofenvironmentalsamplesorspecificchemicalsasapartofanecologicalriskassessment(3-6,12,13).Thoughinferencesregardinghigher-orderecologicaleffects(population,community,orlandscape)maybemadefromtheresults,thesetestsevaluateresponsesofindividualsofoneormoreplantspeciestothetestsubstance.Thisguideisapplicablefor:(a)establishingphytotoxicityoforganicandinorganicsubstances;(b)determiningthephytotoxicityofenvironmentalsamples;(c)determiningthephytotoxicityofsludgesandhazardouswastes,(d)assessingtheimpactofdischargeoftoxicantstoland,and(e)assessingtheeffectivenessofremediationefforts.1.1Thisguidecoverspracticesforconductingplanttoxicitytestsusingterrestrialplantspeciestodetermineeffectsoftestsubstancesonplantgrowthanddevelopment.Specifictestproceduresarepresentedinaccompanyingannexes.1.2Terrestrialplantsarevitalcomponentsofecologicallandscapes.Thepopulationsandcommunitiesofplantsinfluencethedistributionandabundanceofwildlife.Obviously,plantsarethecentralfocusofagriculture,forestry,andrangelands.Toxicitytestsconductedundertheguidelinesandannexespresentedhereincanprovidecriticalinformationregardingtheeffectsofchemicalsontheestablishmentandmaintenanceofterrestrialplantcommunities.1.3Toxicsubstancesthatpreventorreduceseedgerminationcanhaveimmediateandlargeimpactstocrops.Innaturalsystems,manydesiredspeciesmaybesensitive,whileotherspeciesaretolerant.Suchselectivepressurecanresultinchangesinspeciesdiversity,populationdynamics,andcommunitystructurethatmaybeconsideredundesirable.Similarly,toxicsubstancesmayimpairthegrowthanddevelopmentofseedlingsresultingindecreasedplantpopulations,decreasedcompetitiveabilities,reducedreproductivecapacity,andloweredcropyield.Forthepurposesofthisguide,testsubstancesincludepesticides,industrialchemicals,sludges,metalsormetalloids,andhazardouswastesthatcouldbeaddedtosoil.Italsoincludesenvironmentalsamplesthatmayhavehadanyofthesetestsubstancesincorporatedintosoil.1.4Terrestrialplantsrangefromannuals,capableofcompletingalife-cycleinaslittleasafewweeks,tolong-livedperennialsthatgrowandreproduceforseveralhundredsofyears.Procedurestoevaluatechemicaleffectsonplantsrangefromshort-termmeasuresofphysiologicalresponses(forexample,chlorophyllfluorescence)tofieldstudiesoftreesoverseveralyears.Researchanddevelopmentofstandardizedplanttestshaveemphasizedthreecategoriesoftests:(1)short-term,physiologicalendpoints(thatis,biomarkers);(2)short-termtestsconductedduringtheearlystagesofplantgrowthwithseveralendpointsrelatedtosurvival,growth,anddevelopment;and(3)life-cycletoxicityteststhatemphasizereproductivesuccess.1.5Thisguideisarrangedbysectionsasfollows:SectionTitle1
Scope
2
ReferencedDocuments
3
Terminology
4
Summaryo......
【中国标准分类号】:Z04
【国际标准分类号】:07_100_99
【页数】:21P.;A4
【正文语种】:英语