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1、谈比较优势极限论与比较优势陷阱（Onthetheoryofcomparativeadvantageandthetrapofcomparativeadvantage）OnthetheoryofcomparativeadvantageandthetrapofcomparativeadvantageAbstract:accordingtothecomparativeadvantageofincreasedproductionspeedlimit,bringtheinternationaldivisionoflaborandtheeconomiesofscaleintheindustryoncesu
2、rpasstheworldmarketdemandincreasedspeed,willinevitablyleadtoovercapacityandtradefriction.Therefore,eachcountryinaccordancewiththeadvantagesofinternationaldivisionoflabor,infact,thereisacertainlimit,oncebeyondthislimit,inadditiontointensifyingtradefriction,the"Mattheweffect"betweentheindustryappears
3、.Thetraditionaltheoryofcomparativeadvantageisonlyestablishedintheshortrun,andacountrywillparticipateintheinternationaldivisionoflaborinaccordancewiththetheoryofcomparativeadvantageforalongtime,andwillfallintothetrapofcomparativeadvantage.Keywords:comparativeadvantage,internationaldivisionoflabor,ec
4、onomiesofscale,limitsTraditionalcomparativeadvantagetheory(1)thepresuppositionsofthetheoryofcomparativeadvantageFirst,thereareonlytwocountriesintheworldproducingtwokindsofproducts,andlaboristheonlyfactorinproductioninput.Wecallthe2x2x1model;twoislaborarehomogeneous,andinvestedthesameefficiencyofdif
5、ferentproducts;threeisthemarketiscompletelyfreecompetitionandfreetrade;thefourisinthedomesticlaborflowfreely,butcannotflowfreelyintheworld;thefiveisforeachproductthecostisfixed,thereisnoeconomiesofscale;thesixisnotransportationcostsandothertransactioncosts;sevenarebetweenthesameconsumerpreference.(
6、two)theinternationaltrademodeldeterminedbycomparativeadvantageAccordingtoRicardo'stheoryofcomparativeadvantage,acountrycanbenefitfrominternationaldivisionoflaborandtrade,anditdoesnotnecessarilyneedanabsoluteadvantage,providedithascomparativeadvantages.Thecomparativeadvantageisbothoftheheavy,twodisa
7、dvantagesofthelesser".Eachcountryshouldcarryoutspecializedproductionintheindustrywithcomparativeadvantage,andgiveupotherindustrieswithinferiorposition.LimittheoryofcomparativeadvantageRelaxthefifthassumptio
