请输入您要查询的英文单词:
单词
four-color problem
释义
WordReference Random House Unabridged Dictionary of American English © 2024
four
′
-col
′
or prob′lem
(fôr
′
kul
′
ər, fōr
′
-),
USA pronunciation
[
Math.
]
Mathematics
the problem, solved in 1976, of proving the theorem that any geographic map can be colored using only four colors so that no connected countries with a common boundary are colored the same color.
Also called
four
′
-col
′
or the′orem.
1875–80
随便看
retractible
retractile
retraction
retractive
retractively
retractiveness
retractor
retrain
retrainable
retrainee
retral
retrally
re-tread
retread
re-treat
retreat
retreatal
retreatant
retreater
retreatism
retreatist
retreative
retrench
retrenchable
retrencher
英语词典包含188688条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。
Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/9/20 16:40:28