A grain logistics center location model based on extension theory is put forward, which applies extension decision method, cluster analysis and gravity method together.
综合运用可拓决策方法、聚类分析、重心法，建立了基于可拓理论的粮食物流中心选址模型。
2
This article takes the industrial cluster theory as the foundation, discussing the competitive advantages of the grain logistic park with the game theory.
本文以产业集群理论为基础，利用博弈论等分析方法，探讨了粮食物流园区竞争优势的相关问题。
3
Grain: Cluster of silver particles in the photo-graphic emulsions. Emulsions with faster speed have larger grains than emulsions with slower speed.