学科分类
/ 6
105 个结果
  • 简介:都市快速生产着高楼快车,也快速生产着人们内心的压力、寂寞与孤独。面对相识的人不肯吐露内心所想,却要通过冰冷的机器来传达信息,这也许是第一个发明这部机器的人始料未及的吧……

  • 标签:
  • 简介:  MenandwomengoouttogetheragreatdealinAmerica,especiallyinthecities.Theyskitogether,worktogether,dinetogether,eitheratrestaurantsorineachother'sapartments.Thisdoesnotmeanthattheyarenecessarilyinterestedinhavingsextogether,thoughitmayappearso,and,ofcourse,withsomemenandwomenitisso.……

  • 标签:
  • 简介:

  • 标签:
  • 简介:你是忙得没有时间恋爱的单身一族吗?那么你有必要去试试当下席卷英国的最新约会方式——闪电约会。

  • 标签: 约会 恋爱 方式 新约 时间
  • 简介:欧·享利是美国著名的短篇小说家。本文是他的代表作之一。本文讲述了一名身患疾病的女孩将自己的性命寄托在一片藤叶上,其间会发生什么事呢?请看……

  • 标签: 高中 英语教学 高考 教材
  • 简介:人的意志力有时候非常强大,只是需要你用到恰当的地方。有的时候它看起来更像心理暗示,你的暗示越强烈,事情就会向着你暗示的方向前进。就像本文中的女主人公Johnsy一样。Johnsy的命运最终会如何呢?看完本文,答案将会揭晓。

  • 标签: The 心理暗示 女主人公 意志力
  • 简介:Leafshapesarenotonlytheusefulindicatorsinplanttaxonomy,butalsotheimportantfactorsaffectingenergyandmaterialexchangeinleaves.Inthispaper,wecollectedandscannedtheleavesofNitrariatangutoruminDengkouofInnerMongoliaAutonomousRegion(themeanannualprecipitation145mm)andMinqinofGansuProvince(themeanannualprecipitation115mm)andN.sphaerocarpainDunhuang,andthenanalyzedleafshapeparameterswithImage-ProPlus6.0imageprocessingsoftwareandleafδ13CvaluesintheisotopelaboratoryoftheChineseAcademyofForestry.Theresultshowedthat:1)asleafareaincreasedwithincreasingwateravailabilitytheincreasesintheleaflengthandwidthwereasynchronously;2)withthesameleafwidth,the1eavesofN.tangutorumandN.sphaerocarpaweresignificantlylongerinhighwateravailableconditions;and3)althoughthereweresignificantlydifferencesinwateravailabilitybetweenDengkouandMinqin,aswellasbetweenthebottomandmiddleofthealluvialfanneartheEastLakeinDunhuang,theleafδ13CvaluesofN.tangutorumorN.sphaerocarpaweresimilarindifferentwaterconditions(P>0.05).Ourresultssuggestedthattheratioofleafperimetertoareawouldbeanimportantfactorwhichlinkedleafshapetoplantwaterphysiology.Duringgrowingprocedureofleafarea,leaflengthincreasewaspriortoitswidthtoalleviatethereductioninratioofperimetertoareaandmaintainwateruseefficiencyoftheplant.

  • 标签: NITRARIA tangutorum NITRARIA sphaerocarpa LEAF SHAPE
  • 简介:Monitoringandstudyofdynamiccharacteristicsofgroundwateraresignificantmethodsofearthquakemonitoringandforecasting.Forresearchongroundwaterdynamics,groundwaterdatingcanqualitativelyandquantitativelyprovidescientificanalysisonthecharacteristicsofgroundwaterrechargeandrunoffaswellasrenewalcapacity.Thisarticleillustratesthemethodsusedgloballyandsummarizesthemainadvancesandachievementsingroundwaterdating.Italsofocusesontherelationshipsbetweengroundwaterrenewalcapacityandseismicmonitoring,groundwatermovementandseismicactivity,shallowgroundwaterrechargeandabnormalinterferenceelimination.Thestudiesshowthatgroundwaterdatingplaysanimportantroleinwater-rockinteraction,andgeologicaltectonicandseismicactivityevaluation.Therefore,groundwaterdatingcanbewidelyusedtomonitorandanalyzetheprecursorinformationinseismicundergroundfluidobservationsinthenearfuture.

  • 标签: 地震监测预报 地下水动态 测年 地下水补给 应用 水岩相互作用
  • 简介:~~

  • 标签:
  • 简介:Aleafinclinationangledistributionmodel,whichisapplicabletosimulateleafinclinationangledistributioninsixheightsoflayeredcanopyatdifferentgrowthstages,wasestablishedbycomponentfactorsaffectingplanttypeinrice.Theaccuracyofthesimulationresultswasvalidatedbymeasuredvaluesfromafieldexperiment.Thecoefficientofdetermination(R2)andtherootmeansquareerror(RMSE)betweenthesimulatedandmeasuredvalueswere0.9472and3.93%,respectively.Thesimulationresultsshowedthatthedistributionofleafinclinationanglesdifferedamongthethreeplanttypes.TheleafinclinationangleswerelargerinthecompactvarietyLiangyoupeijiuwitherectleavesthanintheloosevarietyShanyou63withdroopyleavesandtheintermediatevarietyLiangyouY06.TheleafinclinationanglesweredistributedinthelowerrangeinShanyou63,whichmatchedupwithfieldmeasurements.Thedistributionofleafinclinationanglesinthesamevarietychangedthroughoutthesevengrowthstages.Theleafinclinationanglesenlargedgraduallyfromtransplantingtobooting.Duringthepost-bootingperiod,theleafinclinationangleincreasedinShanyou63andLiangyouY06,butchangedlittleinLiangyoupeijiu.Ateverygrowthstageofeachvariety,canopyleafinclinationangledistributiononthesixheightsofcanopylayerswasvariable.Ascanopyheightincreased,thelayeredleafareaindex(LAI)decreasedinallthethreeplanttypes.However,whiletheleafinclinationanglesshowedlittlechangeinLiangyoupeijiu,theybecamelargerinShanyou63butsmallerinLiangyouY06.Thesimulationresultsusedintheconstructedmodelwereverysimilartotheactualmeasurementvalues.Themodelprovidesamethodforestimatingcanopyleafinclinationangledistributioninriceproduction.

  • 标签: 叶片倾角 水稻产量 冠层叶 模拟 紧凑型品种 分布模型
  • 简介:许多米饭点叶(系统程序设计语言)异种是为理解在植物涉及强风抵抗,细菌的老家抵抗和规划房间死亡的机制的理想的来源。在米饭的50点叶异种的基因控制被描绘了,一些点叶基因也被孤立。这篇文章考察为他们的显型,和他们对主要米饭疾病的抵抗回答负责的点叶基因的起源,基因模式,隔离和描述。

  • 标签: 水稻病虫害 突变体 ORYZA 程序性细胞死亡 白叶枯病抗性 抗稻瘟病