According to some factors that are not considered in my computer program, origin of error is put forward when using this program. Therefore, in order to improve computing precision, these factors should be modified. 针对本程序未考虑的因素,提出了在使用程序计算时可能产生的误差来源,因此,为了进一步提高计算的精度,可以进行修正的几个方面。