在技术站编组，通过一个及其以上区段站不进行改编作业的列车。
编制网络列车运行图的很重要的一环就是处理直通列车在技术站的接续与始发列车的合理协调问题。
By analyzing the relationship between the through goods train's linkage and the equilibrium of departure trains at technical stations, a network flow model for linking through goods train is set up.
最后，应用模糊物理规划进行了直通旅客列车开行方案的优化。
Finally, Fuzzy Physical Programming is used in optimization of running chart of through passenger train.
郑州东站是一个大型的复杂结构，由于功能要求，结构在正常服役期间势必会有列车的到、发及直通。
Zhengzhou East Railway Station is a large and complex structure. According to functional requirements, trains will arrive, leave and pass through the structure on the time of normally working service.
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