快速计算中央子午线，实现投影带的转换和分析-Central meridian quick calculation, and analysis to achieve the conversion of projection zone

高斯投影中央子午线对四参数相似变换影响，验证相似变换是否可以模拟不同中央子午线投影系统转换-Gauss projection central meridian of the four-parameter similarity transformation influence, verify whether the similarity transformation can simulate different central meridian of the projection system c