测绘中贝塞尔大地主题问题解算有正反解，还有对话框，用户可以通过对话框输入数据-Surveying and Mapping Bessel Geodetic Problem solving inverse solution, there is dialog, the user can input data through a dialog box

单击鼠标选择控制点，自动生成控制线和贝塞尔曲线；可用鼠标拖动控制点，修改贝塞尔曲线形状。-Click the mouse to the control point, the automatic generation of control lines and Bessel curve can use the mouse to drag the control point, modify the shape of the Bessel curve.