用来计算坐标转换,对于投影的WGS84坐标转换 四参数转换-Used to calculate the coordinate transformation, the projection WGS84 coordinate conversion parameters into four

通过Cform文件读取数据，实现测量中四参数、七参数的坐标转换，最后输出结果到list control中。-Read by Form file data to achieve a four-parameter measurements, seven-parameter coordinate transformation, the final output to the list control.

用布尔莎法实现了坐标系的七参数转换，大地测量学课程作业(The transformation of seven parameters of the coordinate system is realized by means of bursa method)