沙堆模型程序，运行之后能够得到沙堆中发生雪崩的大小和持续时间。-sand model procedures after the operation can be sand avalanche occurred on the size and duration.

sandpile 沙堆模型程序,运行之后能够得到 中发生雪崩的大小和时间。--sandpile sandpile model program, after running can get the size and time of avalanche.-