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求比值128128:640.640.5454:2.72.74 4 米:米:6060 厘米厘米2451.51.5:39:65 51.41.44848323225:0.720.72112:31120:52/32/3:4/54/50.850.851717128128:64645 51.41.40.850.85 吨吨170170 千克千克417:715:0.240.2412.612.6:0.40.4484832320.150.152.52.521.51.5:30.150.152.52.5125125:75755454:2.72.73636:1.51.520.360.36:525:1525:15第 1 页30.40.4:52727:242413:3913:3921.51.5:30.750.751801802525:1.251.250.160.162.42.4第 2 页