英语词汇sigma ring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	sigma ring
释义	sigma ring 【数学】σ环[亦作 σ-ring,sigma-ring]
随便看	picture dictionary picturedrome picture element picture elements picture format picture formatting picture frame picture framer picture frequency picture-frustration picture galleries picture gallery picturegoer picturegoers picture hat picture hats picturehatted picture house picture magazine picture memory picture monitor picture moulding picture palace picture palaces picture-perfect

英汉双解词典包含483723条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。