F11919A1000-7326(2003)07-0073-03200373[],,,,,,,[][],;,,,200062,,,,(PaulKrugman)(MiclaclPorter),,,:,,,,,,,,:,,,,,,,,,,,,,(pathdependcnce)1985,37©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,(locked-in)(Fujita):,,,,,,,,,,,,,,,,,,,,,,,:(1991),:,,,,,(1996),,,,(1996),L,,,,(1996),,,47©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,,,,,2060,,,,,1.,,,,,,,,,,,2.,,,,,,,2060,,;,,,,,,,,,,,,,,,,,,,,,,57©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.F06115A1000-7326(2003)07-0076-0320037[](),,,,,,[][],;,,,200063():2001FDI,:(),,20012002::,,,,,,,,3(01JA790125):,20004:,11,72-76:,,2000,84-94:,4,497-504:67©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.