运用骨料图形程序能够完成圆形骨料的投放。但是所用的生成圆形骨料程序，缺乏形状上的随机性，与实际骨料形状有一定的区别，还有未考虑黏结界面-Use a graphics program to complete the round aggregate aggregate delivery. But round aggregate generating procedures used by the lack of randomness on the shape, and the shape of the actual aggregate have some differences, there are not considered bonding interface