简介：摘要：本文介绍了灰铸铁HT300机床滑鞍铸件的造型工艺和熔炼工艺研制过程。首先根据铸件结构和性能需求确定材料成分配比;然后通过合理使用冒口及冷铁来保证铸件内部质量；再应用铸造模拟对工艺进行修正；最后投产试制并收集数据，分析结果完善工艺。

简介：Asinternationalstrategicstructureevolves,dramaticchangeshavetakenplaceinthetriangularrelationshipamongtheUnitedStates,IndiaandPakistanoverthepastfewyears.TherelativelybalancedsharptriangleshapedintheearlyperiodaftertheColdWarhasbeenreplacedbyanobtuseonecharacterizedby"warmU.S.-IndorelationshipanddistantU.

简介：ManybelievethatChinaandtheU.S.havebeenstrugglingagainsteachothertogaintheupperhandintheEastAsianregion-andtheareabeyondChina'scoastline-inrecentyears.

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简介：Inhisarticleentitled'BigTroubleBrewingintheHood'publishedatonlineSydneyMorningHeraldonAugust3,2010,ProfessorJohnMearsheimerattheUniversityofChicagoclaimedthat'thebalanceofpowerinAsiaisexpectedtochange

简介：China-U.S.relationsareoneofthemostimportantbilateralrelationsintoday'sworld.Itnotonlyrelatestotheoverallinterestsofbothsides,butalsohasanimportantinfluenceonpeace,securityanddevelopmentoftheAsia-Pacificregionandtheworldatlarge.Intheforeseeablefuture,China-U.S.relationswilldefinitelybeupgradedtotheworld'smostimportantbilateral

简介：TopredictthefuturedevelopmentofChina-U.S.relations,wshouldattachimportancetothethreenewcharacteristicsofthisbilateralrelationship.First,weshouldseeclearlythechangesoftheprincipacontradictioninSino-Americanrelations,whichisthekeylinkinunderstandingthebilateralrelationshipfromthestrategicand

简介：Bushwontheelectioninthe2004PresidentelectioninAmerica,leavingmanytopicsfordiscussionforscholars.HereIwanttoraisetwoquestions:first,whyBushwasre-elected?Second,whatdoesBush'sbeingre-electedmeantoU.S.politics?Withregardtothefirstquestion,manyanalyseshavebeendonethatcanbeconcludedasthefollowingfourreasons:(1)U.S.politicalhistoryandelectionhistoryshowthatwartimepresidentisverylikelytobere-elected.(2)Americawasintheanti-terroristwar.ThemajorityofU.S.citizensfeelsafeduetoBush-ledterroristwar.(3)U.S.politicaltrendofthoughtisconservativeingeneralandthistrendcontinuestobeso.Plusmanyreligiousright-wingersespeciallytheinfluenceofthedevelopmentoftheGospelreligioussectanditsgrass-rootworkisconducivetoBush'sbeingre-elected.(4)LargecapitalandenterprisegroupssupportBush.

简介：TodiscussthetrendoftheU.S.policiesafterthepresidentialelection,economicdimensionisundoubtedveryimportant.MyviewisthatthenewBushadministrationwillnotlargelyadjusttheexistingeconomicpolicies;howeveritmayadoptmoretradeprotectionistmethods.

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简介：ChinaisplayingacrucialroleintheObamaadministration'sattempttobuilda'multi-partnerworld'basedoncooperationandsharedresponsibilities.Inlightoftheprofoundgeo-economictransformationsof2008-2009,theUnitedStateshaslittlechoicebuttostriveforpartnership,especiallywiththecountrythatisWashington'smajorcreditor.Obama'sforeignpolicyapproach,however,goesbeyondamerepragmaticadaptationtothenewrealitiesandconstitutesauniquewindowofopportunityfortheestablishmentofanunprecedentedlevelofU.S.-Chinacooperation.FromaEuropeanperspective,thepositiveevolutioninU.S.-Chinacooperationhasbeenwelcomedasakeycontributiontotheresolutionoftheglobalproblemsconfrontingtheplanet.TheEuropeanUnionhasneverthelessreactedwithapprehensiontothesuggestionsbyAmericancommentatorsforthecreationofaU.S.-China'G-2'.ThatissuewasdiscussedattheEU-ChinaSummitunderlinestheseriousnessoftheproposalandserves,initself,asasignificantindicatorofthegreattransformationofintemationalrelationscharacterizingtheyears2008-2009.

简介：CHINAistheonlyoneoftheworld＇sthreelarg-esteconomiesinwhichasignificantnumberofitsmostimportantcompaniesarelistedonsharemarketsoutsidedirectregulatorycontroloftheirhomecountry＇smainfinancialadministration.AlmostallmajorU.S.companiesarelistedintheU.S.ThesameappliesinJapan.ButmanyChinesecompa-niesarelistedinHongKong,partofChinabutwithseparateregulationandcapitalmarketsfromChina＇smainlandeeonomy.FurthermoreasignificantnumberofChinesecompaniesarelistedinLondonandtheU.S.

简介：InordertodevelopChina-U.S.relations,wemustenhancestrategicmutualtrust.Butthestrengtheningofmutualtrustcannotbeachievedovernight.Besides,duetodifferencesinhistory,nationalinterestsanddevelopmentstrategy,theleveloftrustthatthetwocountriescanreachislimited.Then,underthepremisethatstrategicdifferencesexistbetweenChinaandthe

简介：正AttheinvitationoftheUniversityofMississippi,FriendshipForceInternationalandtheNorthAmericaAssociationforInternationalExchanges,Mr.DuKening,DeputySecretary-GeneralofCAFIU,leadinga3-memberworkinggroupvisited

简介：SincethedisintegrationoftheformerSovietUnion,theUnitedStatesandRus-siahavegonethroughatortuousroadinforgingtheirpost-ColdWarrelation-ship.Atpresent,theyareneitherbipolarrivals,norstrategicpartnersasinitiatedinearly1990s.Theyhaveinsteadturnedfrommaintainingamicabilityintocopingwiththereality.Theirdiscrepanciesintermsofstrategiesandbilateralrelationshaveemergedoneafteranotherinrecentyearsandbecameintensifiedespeciallyaf-terOperationDesertFoxagainstIraqbytheUnitedStatesandBritainand

简介：Analysisoftheissuecallsforsomequestionsofmethodology.First,thelawofhistoricaldevelopmentteachesthatallcountries,nomatterhowstrongtheymaybe,willeventuallydecline.SothepointisnotwhethertheUnitedStateswillbeanexception,butwhenandhowwillthedayofreckoningdescendontheworld'scurrentsolesuperpower.

简介：1.ThedevelopmentofChina-U.S.relationsin2007willbeinfluencedmainlybythefollowingfactors:(1)ThetrendofU.S.economicdevelopment;(2)ThechangesinU.S.domesticpolitics;(3)theIraqissue;(4)TheTaiwanquestion;(5)ThewayChinadealswithChina-U.S.relations.

简介：BarackObamabecamethefirstAfricanAmericanpresidentcallingforchange.Heisnotonlyfacedwithseriouschallengesontheeconomicandfinancialfronts,butalsohastodealwithavarietyofmajorsocialproblemswhichwillpotentiallyreshapeAmericansocietyinthe21stcentury:increasingeconomicinequality,complexracerelations,anunsustainablehealthcareburdenandaweakeningeducationsystem.TheseareissueswhichhaveexistedfordecadesintheU.S.,butnowitseemsthatPresidentObamahasabetteropportunitytomakea'realchange'happenthanhispredecessors,becauseAmericansocietyisgoingthroughafundamentalevolution.

简介：SinceGeorgeW.Bushassumedthepresidencyinearly2001,atensesituationhadoccurredintherelationshipsamongworldbigpowers.IntheaftermathofSeptember11,significantimprovementhasbeenmadeinSino-U.S.andRussia-U.S.relations.Inthemeantime,correspondingchangeshavetakenplaceinEU-U.S.andRussia-Chinarelations.