(,430072),,,;,,;,,,,D820A1004-4175(2004)06-0112-02,,,(),4,,,,,,15,,(),,,,,29,15:,,,,,,,,,,,,107,,,,,,,,,,;,,,,,,,,30,,,,,,,,::(1949-1978)30,,2050,,,,,70,,21120046©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,,,,,,,,:2080,,,,70,,,,,:80,,,,,,30:209080,,,:,21,,,10+390,,,,,,,,:,,,,:,,,,,,,,,,,,;,,,,,,,,,,,,,,,,,,,,,,,,,,,()31120046©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.