英语词汇“second category”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	second category
释义	second category second category [′sek·ənd ′kad·ə‚gȯr·ē] (mathematics) A set is of second category if it cannot be expressed as a countable union of nowhere dense sets.
随便看	seydel seydhisfjordhur seydisfjordur seydisfjördur seydlitz, friedrich wilhelm, freiherr von seydlitz, friedrich wilhelm von seye seyed seyen seyf seyfert 1 galaxy seyfert 2 galaxy seyfert galaxies seyfert galaxy seyfert's sextet seyh seyhan seyhan river seyhi, sinan seyhun, hushang seyid abulgasim nabati seyid azim shirvani seyid äzim shirvani seylac seyll

英语词典包含2567994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。