求比值.如下:8:4 4:8 7:10 1:7 14:21 24:27 6:13 100:90 8:5 39:2 3.2
求比值.如下:
8:4 4:8 7:10 1:7 14:21 24:27 6:13 100:90 8:5 39:2
3.2:0.8 5.6:0.7 0.36:0.12 0.9:2.7 6.8:0.34 0.5:2.5 3.5:35
4.3:4.3 30分:0.5时 750千克:1吨 8/9:4 5/4:4 2:2/1
5:6/5 0.8:4/1 0.12:6/1 8/5:2/5 2/1:3/1 5/2:5/6 36/25:6/5