If asteroids are monolithic rocks独块巨石 undergoing经历, 承受 random collisions, a graph曲线图 of their rotation rates should show a bell-shaped distribution with a statistical “tail” of very fast rotators. 独块巨石行星:大部分都集中在钟形分布速度中等的这一区域,少数(只有在尾巴 tail 会出现)过快或者过慢的