由个案调查，到区域研究，再到区域比较，是农村政策研究的基本进路。

It is the basic way that goes from case study to area study, and to area comparison in the studies of basis of the rural policy.

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此项研究的主要目标是消除基本时刻表偏差及由车站或列车停发进路问题所引起的对列车运行的干扰。

The main objective of this work is to overcome on timetable deviations of train and time disturbances occurring in stations or among the route due to train stopping or running.

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其基本演进路径又是怎样的？

And what's the basic evolutionary path like?

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