operation train group 运行列车组
train group running 列车群运行
train group operation 列车群运行
train group descending 训练集递减
high-speed train group 高速列车群
train group operation system 列车群系统
group train [铁路] 分组列车
power train axle group 传动系统轴组件
The basic structure of simulation system and distributed simulation system about train group operation are built according to the varied kinds of object-oriented Petri nets, and the fundamental experiment model featuring universality, expansibility, manipulability, etc, is implemented.
论文构建了一种基于多种对象Petri网的列车群运行仿真系统及分布式仿真系统的基本结构，并设计实施了基本的实验模型，实验模型在设计方面立足于通用性好、扩充性优良、操作便利等特点。
参考来源 - 智能混杂系统建模、分析理论及应用的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Reasoning and validating of temporal knowledge are very important in modeling and analyzing operations of a train group, and are the key technology of its implementation.
时间知识的推理和验证技术对列车群行为建模分析具有重要意义，是其实施关键。
One day,she went to the train center in Washington to meet a group of soldiers from Massachusetts.
VOA: special.2009.07.26
Then,a large group of Johnston's troops arrived by train and joined in the fight.
VOA: special.2009.08.27
A band met the train and marched with the group to McKinley's home.
VOA: special.2010.07.01
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