这一方法不仅利用二项树通信步中的规则性，而且利用了二项树拓扑结构的规则性。
The method exploits regularities both in the communication phases and in the topological communication structure of a binomial tree.
通过引入二项树定价模型和风险中性原理，文章对造船业大型造船设施投入使用和悬置进行了研究。
By introducing the binomial tree model and the risk-neutral principle theoretically, the paper will study the use or the suspension of the large shipbuilding facilities in the shipbuilding industry.
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