例子:一个有四种材料的小例子C Cell Cards1 1 -0.001020 -1 2 2 -1.0 1 -2 3 3 -4.27 2 -34 4 -2.6989 3 -45 0 4C Surface Cards1 sph 0 0 0 52 sph 0 0 0 83 sph 0 0 0 104 sph 0 0 0 12mode nimp:n 1 3r 0sdef