20005(),,,1937,519::(),32285:,,60,,,,,,,,,:,:,:,,:,,,,,,::(),::,,,:,,,:,,,,,:,:,,,,:,:,(),12©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,:,(),(2695),:,(1520):,:::,,,,,:(383),:,(831),[],[](832)[],:[](834),(34379),(830),:(25)(32912,34057):,:,:::,:,,,,:,,,:,,(13.46.1),,,,,,,,:,:,:,:,:,:,,,,:,::,,,,,:,:,,(,),,,,():,:,,:[],:,:()(),:(5516)(27)42©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,,,,(),,:1006,951,(),,,,,,:11(75):,,,21(79111):,846,,,,:,()(24),,,,,,,,,,,,,,,,,1981,349,294295,1998,19927,100,3435,41421152,1974:,1956,439()72©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.