说明：  lingjian.m使用零件初始值，用蒙特卡罗方法算出总费用。其中使用了自己编制的正态分布随机数发生器产生正态分布随机数。lingjian.m是对蒙特卡罗方法的一次练习。 accyouhua为标定值的函数，而lingjian不是一个函数，在其中已给出了一组标定值的值
(lingjian.m initial value of the use of parts, using the Monte Carlo method to calculate the total cost. Using its own random number produced by the normal distribution normal distribution random number generator. lingjian.m Monte Carlo method is a practice. accyouhua calibration value for the function, while lingjian is not a function, in which one group has been given the value of calibration value)