本程序功能简介：本程序有八大计算功能。分别是（1）水平角计算（2）竖直角计算（3）三角高程计算（4）均值和方差计算（5）线性方程组计算（6）坐标正反算（7）平差计算（8）坐标计算。-Introduction the function: the program has eight calculation function. Are (1) the horizontal angle calculation (2) vertical angle calculation (3) triangle ele