3) some pigeons in a cage
笼子里的几只鸽子
4) Pigeonhole principle
鸽笼原理
1.
This paper describes three questions;that is,the mapping background of pigeonhole principle by using the corresponding relation between different sets;the thought and analysis of the"pigeonhole design"used in solution;the estimation of the minimum unmber in the pigeonhole and its application.
利用集合间的对应关系阐述了鸽笼原理的映射背景；对解题中“鸽笼设计”的思考与分析；同笼最小重鸽数的确定及其某些应用。
5) pigeon-hole
鸽笼式架
6) Colombard(France)
鸽笼白
补充资料：鸽子笼
1.饲养鸽子﹑供鸽子栖息的笼子。亦比喻窄小的房子。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条