铁路及公路中线坐标计算程序，界面友好，计算参数设置简单，可计算回头曲线等各种曲线。-railway and the highway centerline coordinates calculation program, with a friendly interface, a simple calculation parameters. back curve can be calculated various curves.

铁路及公路中线坐标计算程序，界面友好，计算参数设置简单，可计算回头曲线等各种曲线。-railway and the highway centerline coordinates calculation program, with a friendly interface, a simple calculation parameters. back curve can be calculated various curves.