!a为x坐标 b为y坐标; sets:point/1..12/:x,y,r,dis; endsets data:X=0 8.20 0.50 5.70 0.77 2.87 4.43 2.58 0.72 9.76 3.19 5.55; Y=0 0.50 4.90 5.00 6.49 8.76 3.26 9.32 9.96 3.16 7.20 7.88; r=600 1000 800 140...