英语词汇pentagonal number怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	pentagonal number
释义	pentagonal number 简明释义五边形数：一种数学概念，表示由五边形排列的点所组成的图形中的点数。五边形数的通项公式为Pn = n(3n - 1)/2，其中n为正整数。网络释义短语 1 pentagonal number theorem 五边形数定理 2 Pentagonal pyramidal number 五角锥数
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