英语词汇“triangular numbers”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	triangular numbers
释义	> as lemmas triangular numbers triangular numbers n. (also elliptical as triangulars) the first series of polygonal numbers (1, 3, 6, 10, 15, 21, etc.; see polygonal adj. 2), obtained by continued summation of the natural numbers 1, 2, 3, 4, 5, 6, etc.: see quot. 1837.extracted from triangularadj.n. < as lemmas
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