1,2(11;21):,:;;:U415113:C:1008-3383(2003)06-0090-011,,,2(1),,:;;;(2),,,,,,,,(3),,,,,,:,;;,,,,,,,,3(1),(2)(3),(4),,,,,,(5),(6)4(1),,,(2),,(3),,,,:2002-12-0820036(112)HEILONGJIANGJIAOTONGKEJINo.6,2003(SumNo.112)©1995-2003TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.