利用简单抽样方法在球面坐标系下产生球面上均匀分布的随机数，但是效率相对较低。-Using simple sampling method in spherical coordinates sphere generated uniformly distributed random numbers, but the efficiency is relatively low.

球面随机数：）希望大家喜欢！也希望大家多多指正，我其实没有搞清楚！(to produce random numbers on a sphere,:))