学科分类
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17 个结果
  • 简介:Correctionisprovidedintheorallanguageclass-roomtohelplearnersidentifyproblematicareas,re-formulaterulesintheirminds,sospeakmoreaccu-rately.However,manycorrectiontechniquesseemtofrustrateandintimidateratherthanenlighten.Thisarticlereviewscurrentcorrectiontechniques.Itthendescribeshowcertainfeaturesoftheclozeprocedurecanbeadaptedintoasimplecorrectionprocedureef-fectiveinelicitingself-andpeer-correctionfromstu-dents.

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  • 简介:Itwasdiscoveredseveraldecadesagothatthenaturalgeo-environmentcouldsubstantiallyimpactonthehealthofanimalsandhumans.However,despitethegrowthofevidencesupportingthisdiscovery,therehasnotbeenacloseinteractionbetweengeoscientistsandhealthscientistsinassessingtheneedtostudythevariousfacetsoftherelationshipsbetweenhumanandanimalhealthandair,water,soilsandrocks.Thisbookistimelyinclosingthatgapasstatedinitstitle.

  • 标签: 地质学 环境 健康 地球科学
  • 简介:Thegeneralsteam-injectionpressingismainlyusedforproduceparticleboardsandmediumdensityfiberboard.However,itisdifficulttoproducesoftfiberboardwithdesiredstrength.However,theclosingsteam-injectionpressingthatbasedonthesteam-injectionpressingcould.Thewoodenframesealinguptheslabcouldpreventthesteamfromemittingwhenthesteaminjectedintotheslab.Thecaloricreleasedbysteamcondensationmaketheslabreachhightemperaturelevelforashortperiod.Thismethodisveryappropriateformakingthickpanelsintheory,especiallyforthesoftfiberboard.Itmakesagreatleapforwardonthehotpressingprocessthatforwood-basedpanels.Moreover,itwillbeameaningfultechnologicalbreakthroughindevelopingnewproductsandimprovingwoodutilization.

  • 标签: 蒸汽注射 纤维板 木材 热挤压技术
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  • 简介:Afterfouryears'extensivelyscramblingrivers'exploitationrightsbypowercompanies,thecountablehydropowerresourcesarealmostsharedup.Inwater-abundantsouthwesternregion,fivelargegenerationgroupsdelimitedtheirownspheresonlargerivers.Sharpprivateenterprisesavailedthemselvesofeveryopportunitytograspthetargetsonsmallandmediumrivers.Asnumerousinvestorsswarmed,hydropowerconstructionenteredarealhightideperiod.'Atpresent,theproportionofexploitedhydroenergyisapproximately20%oftheexploitablewaterenergyinChina.Itwillbeenoughforthedatumtobecloseto60%inChina,otherwisemoreproblemswithecologicalenvironmentwouldfollow.Thehydropowertobedevelopedshallbelimitedwithin350GW,andthisisthetop,'saidWangShucheng,MinisterofMinistryofWaterResources.'Excessivemarketizationislikelytoleadendlesstroubleinhydropowerconstruction.Incasetheinvestmentinahydropowerprojectfails,thedestroytoecologicalenvironmentareverydifficulttoberestored,'saidPengTubiao,chiefengineerfromChinaHydropowerandWaterResourcesPlanningandDesigninstitute.

  • 标签: 电力工业 水电 投资 水利资源 开发权
  • 简介:CongratulationstothecompletiontheTCDCTrainingWorkshop.Duringthepast40days,alotofmeaningfulandinterestingactivitieshasbeenheldinadditiontotheformallyscheduledlecturesintheclassroom.IassumeyonenjoyedyourstayingherefornotonlyobtainingtheknowledgeofSHPdevelopmentfromChineselecturersbutalsoacquiringbroadinformationthroughvaluableexchangeanddiscussiononSHPdevelopmentofrelevantcountriesamongallparticipants.

  • 标签: 小型水力发电 发电设备 2004年 发展中国家 技术合作 培训基地
  • 简介:Byinvestigation,thethesisanalysesandsummarizestheforminganddevelopingofCHFRPInXupucounty.WeselecttheMayandongstockcooperationforestfarmasobject,adoptthemethodssuchassemi-structureinterview,analysingseconddataandsurveyingsampleplots,analyseandstudytheprocesstoclarifythepropertyright,theprofitsallocatedformsandthemanagementforms.TheresultsshowthatCHFRPcantentativelyresolvethecontradictionbetweentheforestlandusingrightscatteredtoeve...

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  • 简介:CLOSINGHILLSFORREFORESTTION──AnEffectiveWaytoRestoreandIncreaseForestryPlantCoverTo“closehills”(sandplots,shoals)andallownatu...

  • 标签: CLOS
  • 简介:Ring-closingmetathesisreactionsinvolvingdiallyldiphenylsilaneanddiallyloxydiphenylsilaneweresuccessfullyperformedbyusingonly0.01molorevenlessofGrubbscatalyst1.Theeffectsofreactionparameters,suchassolvents,temperatureandconcentrationofthecatalystarediscussed.

  • 标签: Ring-closing METATHESIS reaction Grubbs catalyst Diallyldiphenylsilane
  • 简介:(April24,2009)Themeetingofthe10thCounciloftheChineseAssociationforInternationalUnderstandinghasaccomplishedallitsagendaaccordingtotheschedule,andcometoanend.Themeetinghas

  • 标签: 国际交流 理事会 协会 中国 领导班子