1320042,4,,,,,,,,1..:,19962,,:,19981,,,,(),,(3%),20002002,2(),,,,,,,,3%,1998250m35000(,),2000[1999]143,,250m3,(,230031)20002002,,,©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1441250m320025,250m3,,,33.1250m3,,(1),,,,,,250m30.2MPa,(2)250m3,250m3123.2(1)(),,,100(2),,,(3),,,,()(4),4(1),,()()(2),,,,(3),1,[M],,2000.82,[M],,1993.3©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3Vol.41No.2©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.