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(,510075):(),,,:;;;:U445.55:B:1671-2668(2004)06-0075-021(),,153km,,8,63,16,15,,,,,2,,,,()():1)3,,,;,,;,,;,,,,,41)2),3),,,,4),,5),,,6),7):[1].[M].:,1990.[2]JTJ062-91,[S].[3].[M].:,1983.:2004-09-1357105Highways&AutomotiveApplications©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.12)4,,,343),46(2),,,3,,,,,,1)(30m),,(20m):,(),,;,,,3m,(),,,2m,3m;,,3m20m,0.5m,;0.5m,,2)30m30m,,;,:,(),,,;,,,20m30m,1.5m;30m35m,1m;35m,0.5m,(),,,2m,20m30m,1.5m;30m35m,0.5m,,20m,0.5m,;0.5m,,41)HL,,,,,HL,800mm500mm,,2)21312,,,,,2.0,12%,,4,500mm,:[1]JTJ024-85,[S].[2]JTJ041-2000,[S].:2004-11-1667Highways&AutomotiveApplications6200412©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.