在技术站编组，不通过技术站且在区段内不进行摘挂车辆作业的列车。
单线区段列车运行图初始布点是列车运行图优化的一个关键问题。
Study on a general optimization model and its solution for railway network train diagram;
同时，提出新丰镇和西安东开往宝鸡东的区段列车编组计划调整方案以及需要解决的相关问题。
At the same time, the paper raised the adjustment programs of marshalling plan of district trains from Xinfen Town and Xi 'an East to Baoji East, and related issues needed to be solved.
分析货物列车指标的统计现状及重要性，介绍基于区段货物列车指标统计系统的目标和功能。
It was analyzed the current situation and essentiality of freight train indices statistics, introduced the aim and the function of the System for freight train based on sections indices statistics.
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