机械原理的小作业,求使截面系数最大的α角,抗弯截面系数最大,-Mechanical principles of small operation, alpha Angle, to maximize the section modulus maximum bending section coefficient,

用C#写的进行太阳高度角,太阳倾角,以及日照时数的计算的程序(Written in c # for the Angle of the sun, the sun Angle, and calculation of the sunshine time of application)