简介:Chinabearsahighreliefinthewestandlowintheeast,withcomplextopography,totaling2/3ofthewholecountry'sareaformountains,hillyregionsandzigzagplateaus.Thereforethehydraulicresourcesareabundant,withpotentialhydraulicamountofabout680000MW,ofwhich,smallhydropowerresourceisveryrichtooandhasgreatexploitablepotential.Accordingtogeneralinvestigationinearly1980s,theexploitableamountreached87000MW,rankingthetopintheworld.
简介:Withworldpopulationgrowtharablelandareaisdecreasing.Salinesoilisanimportantnaturalresource.Howeverithasnotbeenwellreclaimedowingtoadverseconditions.Forestationisonewayofsaltysoilutilization;ontheotherhand,itcanimprovesoilqualityaswell.Themechanismofsalinitytoleranceisthebasisfortreespeciesselectionwhenplantinginsaltaffectedsoil.Differentplantshavevariouswayofsalinitytolerance,somearesalt-exclusion,e.g.Elaeagnusangustifolia;somearesalt-secretion,e.g.Tamarixspp.;somearesalt-dilution,e.g.Hordeumvulgare;somearesalt-avoidance,e.g.Rhizophoraapiculata.Treesarefavorable,whicharesalttolerantanddroughtorwaterloggingtolerant,aswellasgrowfast.Aftertreespecieshavebeendecided,sitepreparationincludingchangeorexchangeofsoilisnecessary.Meanwhilesuitabledensityoftreesandplantingtimemustbecarefullyconsideredintermsofsoilconditionsandclimaticcharacteristics.Nowalargescaleofforestshasbeenestablishedinsalt-affectedsoilinChinabythemeansdiscussedinthepaper,andprotectforestsystemalongcoastplaysimportantrolesinsocio-economicsustainabledevelopmentandimprovementofeco-environment.
简介:FolowingtheimprovementintheEastAsiansituation,manystrongJapaneseenterprisesstiltakeChinaastheirmostimportantmarketandinvest...
简介:0.General;1.Physicalacoustics;2.Underwatersound;3.Mechanicalvibrationandshock;4.Noiseandnoisecontrol;5.Ultrasonics;6.Speechacousticsandspeechcommunication;7.Physio-logicalacoustics;8.Architecturalacoustics;9.Electroacoustics;10.Acousticalmeasurementandinstrumentation;11.Atmosphericacoustics;12.Geoacoustics;13.Bioacoustics;14.Musicalacoustics;15.Signalprocessing.
简介:Since1978,China’scoalindustryhaswitnessedrapidandhealthydevelopment.AsChinaisundergoingastructuraltransitiontoasocialistmarketeconomy,China’scoalindustrywillimplementamoreopenpolicy,createanidealinvestmentenvironmentandabroadinvestmentfieldforforeigninvestors,conductinternationaltechnicalexchangeandeconomiccooperationonthebasisofequalityandmutualbenefit,andpromotethetechnicalprogressandeconomicgrowthofChina’scoalindustry.
简介:A:Physicsofmetalandmetallography(68-78)B:Testingandanalysis(27-28)C:Mechanical,physicalandchemicalproperties(64-78)D:Metallurgy(111-141)E:Metalworking(50-59)89A0068ObservationofEpitaxialOverlayerofMetalsatAtomicLevelEpitaxialoverlayerofmetalsatatomiclevelhasbeensuccessfully
简介:TheevergrowingstrengthandinfluenceofJOMOOGroupinChinasanitarywareindustryhasshownitsconfidenceanddeterminationtobeintegratedintotheworldwidecompetitionsystem.Sinceitsfoundingin1989.thiscompanylocatedinNan'anhasdevelopedintoacompanywhichhassixholdingsubsidieswiththeemploymentofmorethan1800andtheassetsof2billionRMBthroughtheexplorationandstruggleof15years.Withtheannualoutputof6millionsetsofsanitarywaresandtremendouseconomic,
简介:Theaggregatepopulationofethnicminoritieshasneveraccountedformorethan9percentofChina’stotal,currentlyapproaching1.3billion.YettheirdevelopmentandprosperityhavealwaysbeenhighontheagendaoftheleadersofthePeople’sRepublic.OneofthefirstthingsChineseleadersdidafterNewChinawasfoundedin1949wastoconductlarge-scalestudiestoidentifythecountry’sethnicgroupsandnamethemproperly,basedonscientific
简介:Thequantityofslagandashdischargedfromcoal-firedpowerplantsgrowsinstepwithdevelopmentofelectricpowerindustry,thedisposalofwhichimposesaheavyburdenontheoperatingplantsandtoacertainextentexertsaneffectofrestrainingthedevelopmentofcoal-firedpowergeneratingunits.Presentlyash
简介:A"quietrevolution"isgatheringmomentuminChina,inwhichtheruralmassesareprovingtobeforerunnersinthecountry’sendeavortoimproveanddevelopitssocialistdemocracy.AccordingtostatisticsfromtheMinistryofCivilAffairs,morethan600millionruralpeoplein31provinces,municipalitiesandautonomousregionshaveoverthepastdecadetakenpartinelectionsandreelectionsofwhatisknownas"villagers’committees’—organsofselfgovernmentbyandfortheruralpopulation.Theministryhasalsoreportedthatthevoterturnoutaverages80%andinsomecases,ashighas95%.Untilnow,villagers’committeeshavebeensetupin80%ofthevillagesacrossthelengthandbreadth
简介:Overthedecade,ChineseBiomedicalEngineeringhasmaderemarkleprogressandaccumulatedmuchexperience.Animportantproblemfacingusishowtotaketheroadaheadofus.Firstofall,weshouldchangeourconventionalconceptandheadforthenewroad.Aboutthreeyearsago,wemadeaspecialreviewontheconnotationandchar-acteristicsofbiomedicalengineeringandpointedoutthatBiomedicalEngineeringwas
简介:n2000,theauthorscollectedagreatquantityofrelevantdatabyinvestigatingmorethan50naturereserves.BasedontheanalysisofdevelopmentandmanagementsituationoftheprotectedareasinChina,themainproblemswereputforward,suchas,nounifiedmanagementforincomeandmanagingactivities,lackofspecialguidelineandeffectivesupervision,lackofincomeandinvestment,investingfinancialdifferenceindifferentprovinces.Alltheseproblemscausedthelackoffundsforconstruction,aswellasthedamageofresourcesandenvironment.Furthermoretheconservingactivitieshavetotransmittotheprofitsinmanyprotectedareas.Combinedwiththeseproblems,theprimarysolutionprogrammersalsowereputforward.
简介:ThepresenceofthereversalsofthegeomagneticfieldwithintheBrunhesisindicatedbypaleomagneticstuidesonCenozoicvolcanicrocksintheLeizhouPeninsula,loessstrataandQuaternarymarinesedimentsinthePearlRiverMouthbasininChina.Theseregionalreversalsoccuredat0.58±0.13Ma,0.45Maand0.47—0.48MarespectivelyaccordingtotheresultsofK-Arisotopicdatingandclimatostratigraphicandbiostratigraphicanalyses.ThereversalsequivalenttotheEmperorEventissuggested.ThereversalsrevealedindifferentregionswithvariouslithologiccharactersinChinaprovethattheEmperorEventisaglobalreversaleventratherthanageomagneticexcursion,anditsconfirmationwillpermitaprecisedefinitionoftheMiddle/LatePleistoceneboundary.