单词	pentagonal number
释义	pentagonal number A number which can be arranged in the shape of nested pentagons as shown in the figure. The sequence is 1, 5, 12, 22, 35,…which can be generated by for n ≥1. First four pentagonal numbers
随便看	bottleneck problems bound boundary boundary condition boundary layer boundary value problem bounded above bounded below bounded function bounded sequence bounded set bounded space bounded variation Bourbaki, Nicolas Box-Jenkins model box plot bra braces brachistochrone brackets Brahmagupta Brahmagupta's formula branch branch branch and bound method

数学辞典收录了4151条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。