d D T B r1、2min r3、4min Cr Cor 489.026 634.873 153.988 153.988 3.2 3.2 2460 6840LM772749D/LM772710 0.47 501.650 711.200 250.825 250.825 3.2 6.4 4810 12800 M274149D/M274110 505.181 838.200
