It is a difficult problem in railway transportation product management to rwalize country-wide management of railway waggon flow, especially to realize modernized management of special path described by natural language of non-formalized standard.

• 实现全路车流径路管理，尤其是用非形式规范的自然语言描述的特定径路现代化管理，是铁路运输生产管理中的一个重大技术难题。