笔者提出采用先进的GPS - RTK技术，对既有线曲线整正进行测量。

Now GPS-RTK technique is introduced to adjust the existing railway curves.

youdao

笔者提出采用先进的GPS - RTK技术，对既有线曲线整正进行测量。

Now GPS-RTK technique is introduced to adjust the existing railway curves.

youdao