关键词:水运工程;船舶交通流;到达分布;船头间距分布 [gap=993]Key words:waterway engineering; vessel traffic flow; arrival distribution; headway distribution
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时距分布容易观测得到，而到达分布的观测却较难。
The headway distribution can be get by observation easily, but the arrival distribution not easy.
车头时距分布和到达分布是交通流理论中两个重要的分布。
Headway distribution and arrival distribution are two important distributions of traffic flow theory.
本文在理论与实践上，就几种常用车辆到达分布规律进行了观察与研究。
The capacity distributions of some common vehicle are discussed in theory and practices in this paper, author deduces a vehicle equivalent formula with probability methods.
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