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	oligo-alpha1,6-glucosidase oligoamnios oligoanalgesia oligoanovulatory oligoarthritis oligoarticular type ii juvenile idiopathic arthritis oligoarticular type i juvenile idiopathic arthritis oligo-asthéno-tératospermie oligoblennia oligocene oligocene drowning oligocene epoch oligocene series epoch oligocene system oligochaeta oligochaeta moschata oligochaete oligochaetes oligochaete worm oligochaetous oligochete oligocholia oligochrome oligochylia oligochymia

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。