Through comparison, and analysis, the hierarchy approach method is selected to (prepare) the passenger train work diagram.
通过对这三种方法的分析和比较，选择了层次逼近法作为客车方案铺画的方法。
The train diagram is the base of railway organization work.
列车运行图是全路组织列车运行的基础。
Train diagram is the base of railway organization work.
列车运行图是铁路部门全路组织列车运行的基础。
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