请输入您要查询的英文单词:

 

单词 perfect number
释义

WordReference Random House Unabridged Dictionary of American English © 2024
perfect number, [Math.]
  1. Mathematicsa positive number that is equal to the sum of all positive integers that are submultiples of it, as 6, which is equal to the sum of 1, 2, and 3. Cf. abundant number, deficient number. 
  • Middle English 1350–1400

Collins Concise English Dictionary © HarperCollins Publishers::
perfect number n
  1. an integer, such as 28, that is equal to the sum of all its possible factors, excluding itself
随便看

 

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:2025/2/23 16:29:17