A ‘use by’ date must be stamped on all perishable goods.易腐产品都应标明保质期。Fruits are perishable in transit.水果在运送时容易腐烂.Many fresh foods are highly perishable.许多新鲜食物都极易腐败。A'use by'date must be stamped on all perishable...
A'use by'date must be stamped on all perishable goods.易腐产品都应标明保质期.Fruits are perishable in transit.水果在运送时容易腐烂.Raw eggs are highly perishable and must be chilled before and after cooking.生鸡蛋非常容易变质，烹制前后必须冷藏。...
We shall consider partitions of the edges of graphs and hypergraphs.我们将考虑图和超图的边的划分.This paper discusses the upper chromatic number of the Cartesian product of co - hypergraphs.讨论反超图的笛卡儿积的着色理论,求出了满足一定条件的反超图的笛卡儿积的上色数....