PESTPEST(PoliticalEconomicSocialTechnological),,,,(Political)1.,,,,2001,([2001]9),,,2.WT0WTO5,,,,,;,,,,,,WT,WTO,,,,,,12000,360,43.5,112,,,,(Economic)1.90,,1995GDPt19801999,,,,60,6,,9597,,10000,,2.,,,(70%),,,,;2010,(Social)1.,,,,200010吊,19992mA2,600,400,,,,,,,,,3.2,,,,,,,,,(Fechnologieal)1.,,,:,,,,,,,,,,,,,,2.,(,,,),,:(,),,,,,,,,,,,